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+{
+  "nbformat": 4,
+  "nbformat_minor": 0,
+  "metadata": {
+    "colab": {
+      "name": "Exercise.ipynb",
+      "version": "0.3.2",
+      "provenance": [],
+      "collapsed_sections": []
+    },
+    "kernelspec": {
+      "name": "python3",
+      "display_name": "Python 3"
+    }
+  },
+  "cells": [
+    {
+      "metadata": {
+        "id": "2LTtpUJEibjg",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "# Pandas Exercise :\n",
+        "\n",
+        "\n",
+        "#### import necessary modules"
+      ]
+    },
+    {
+      "metadata": {
+        "id": "c3_UBbMRhiKx",
+        "colab_type": "code",
+        "colab": {}
+      },
+      "cell_type": "code",
+      "source": [
+        "import numpy as np\n",
+        "import pandas as pd"
+      ],
+      "execution_count": 0,
+      "outputs": []
+    },
+    {
+      "metadata": {
+        "id": "tp-cTCyWi8mR",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "#### Load url = \"https://archive.ics.uci.edu/ml/machine-learning-databases/wine/wine.data\" to a dataframe named wine_df\n",
+        "\n",
+        "This is a wine dataset\n",
+        "\n"
+      ]
+    },
+    {
+      "metadata": {
+        "id": "DMojQY3thrRi",
+        "colab_type": "code",
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 359
+        },
+        "outputId": "75935be6-1816-4db5-c0c7-4016595f14a0"
+      },
+      "cell_type": "code",
+      "source": [
+        "url = 'https://archive.ics.uci.edu/ml/machine-learning-databases/wine/wine.data'\n",
+        "wine_df = pd.read_csv(url)\n",
+        "wine_df.head(10)"
+      ],
+      "execution_count": 108,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/html": [
+              "<div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>1</th>\n",
+              "      <th>14.23</th>\n",
+              "      <th>1.71</th>\n",
+              "      <th>2.43</th>\n",
+              "      <th>15.6</th>\n",
+              "      <th>127</th>\n",
+              "      <th>2.8</th>\n",
+              "      <th>3.06</th>\n",
+              "      <th>.28</th>\n",
+              "      <th>2.29</th>\n",
+              "      <th>5.64</th>\n",
+              "      <th>1.04</th>\n",
+              "      <th>3.92</th>\n",
+              "      <th>1065</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.20</td>\n",
+              "      <td>1.78</td>\n",
+              "      <td>2.14</td>\n",
+              "      <td>11.2</td>\n",
+              "      <td>100</td>\n",
+              "      <td>2.65</td>\n",
+              "      <td>2.76</td>\n",
+              "      <td>0.26</td>\n",
+              "      <td>1.28</td>\n",
+              "      <td>4.38</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>3.40</td>\n",
+              "      <td>1050</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>1</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.16</td>\n",
+              "      <td>2.36</td>\n",
+              "      <td>2.67</td>\n",
+              "      <td>18.6</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>3.24</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>2.81</td>\n",
+              "      <td>5.68</td>\n",
+              "      <td>1.03</td>\n",
+              "      <td>3.17</td>\n",
+              "      <td>1185</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.37</td>\n",
+              "      <td>1.95</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>16.8</td>\n",
+              "      <td>113</td>\n",
+              "      <td>3.85</td>\n",
+              "      <td>3.49</td>\n",
+              "      <td>0.24</td>\n",
+              "      <td>2.18</td>\n",
+              "      <td>7.80</td>\n",
+              "      <td>0.86</td>\n",
+              "      <td>3.45</td>\n",
+              "      <td>1480</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.24</td>\n",
+              "      <td>2.59</td>\n",
+              "      <td>2.87</td>\n",
+              "      <td>21.0</td>\n",
+              "      <td>118</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.69</td>\n",
+              "      <td>0.39</td>\n",
+              "      <td>1.82</td>\n",
+              "      <td>4.32</td>\n",
+              "      <td>1.04</td>\n",
+              "      <td>2.93</td>\n",
+              "      <td>735</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.20</td>\n",
+              "      <td>1.76</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>15.2</td>\n",
+              "      <td>112</td>\n",
+              "      <td>3.27</td>\n",
+              "      <td>3.39</td>\n",
+              "      <td>0.34</td>\n",
+              "      <td>1.97</td>\n",
+              "      <td>6.75</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1450</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>5</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.39</td>\n",
+              "      <td>1.87</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>14.6</td>\n",
+              "      <td>96</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>2.52</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.25</td>\n",
+              "      <td>1.02</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1290</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>6</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.06</td>\n",
+              "      <td>2.15</td>\n",
+              "      <td>2.61</td>\n",
+              "      <td>17.6</td>\n",
+              "      <td>121</td>\n",
+              "      <td>2.60</td>\n",
+              "      <td>2.51</td>\n",
+              "      <td>0.31</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>5.05</td>\n",
+              "      <td>1.06</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1295</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>7</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.83</td>\n",
+              "      <td>1.64</td>\n",
+              "      <td>2.17</td>\n",
+              "      <td>14.0</td>\n",
+              "      <td>97</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>0.29</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.20</td>\n",
+              "      <td>1.08</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>8</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.86</td>\n",
+              "      <td>1.35</td>\n",
+              "      <td>2.27</td>\n",
+              "      <td>16.0</td>\n",
+              "      <td>98</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>3.15</td>\n",
+              "      <td>0.22</td>\n",
+              "      <td>1.85</td>\n",
+              "      <td>7.22</td>\n",
+              "      <td>1.01</td>\n",
+              "      <td>3.55</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>9</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.10</td>\n",
+              "      <td>2.16</td>\n",
+              "      <td>2.30</td>\n",
+              "      <td>18.0</td>\n",
+              "      <td>105</td>\n",
+              "      <td>2.95</td>\n",
+              "      <td>3.32</td>\n",
+              "      <td>0.22</td>\n",
+              "      <td>2.38</td>\n",
+              "      <td>5.75</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>3.17</td>\n",
+              "      <td>1510</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "</div>"
+            ],
+            "text/plain": [
+              "   1  14.23  1.71  2.43  15.6  127   2.8  3.06   .28  2.29  5.64  1.04  3.92  \\\n",
+              "0  1  13.20  1.78  2.14  11.2  100  2.65  2.76  0.26  1.28  4.38  1.05  3.40   \n",
+              "1  1  13.16  2.36  2.67  18.6  101  2.80  3.24  0.30  2.81  5.68  1.03  3.17   \n",
+              "2  1  14.37  1.95  2.50  16.8  113  3.85  3.49  0.24  2.18  7.80  0.86  3.45   \n",
+              "3  1  13.24  2.59  2.87  21.0  118  2.80  2.69  0.39  1.82  4.32  1.04  2.93   \n",
+              "4  1  14.20  1.76  2.45  15.2  112  3.27  3.39  0.34  1.97  6.75  1.05  2.85   \n",
+              "5  1  14.39  1.87  2.45  14.6   96  2.50  2.52  0.30  1.98  5.25  1.02  3.58   \n",
+              "6  1  14.06  2.15  2.61  17.6  121  2.60  2.51  0.31  1.25  5.05  1.06  3.58   \n",
+              "7  1  14.83  1.64  2.17  14.0   97  2.80  2.98  0.29  1.98  5.20  1.08  2.85   \n",
+              "8  1  13.86  1.35  2.27  16.0   98  2.98  3.15  0.22  1.85  7.22  1.01  3.55   \n",
+              "9  1  14.10  2.16  2.30  18.0  105  2.95  3.32  0.22  2.38  5.75  1.25  3.17   \n",
+              "\n",
+              "   1065  \n",
+              "0  1050  \n",
+              "1  1185  \n",
+              "2  1480  \n",
+              "3   735  \n",
+              "4  1450  \n",
+              "5  1290  \n",
+              "6  1295  \n",
+              "7  1045  \n",
+              "8  1045  \n",
+              "9  1510  "
+            ]
+          },
+          "metadata": {
+            "tags": []
+          },
+          "execution_count": 108
+        }
+      ]
+    },
+    {
+      "metadata": {
+        "id": "BF9MMjoZjSlg",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "#### print first five rows"
+      ]
+    },
+    {
+      "metadata": {
+        "id": "1vSMQdnHjYNU",
+        "colab_type": "code",
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 204
+        },
+        "outputId": "c13d7565-8120-42d0-bda7-b60b1ca628b6"
+      },
+      "cell_type": "code",
+      "source": [
+        "wine_df.head(5)"
+      ],
+      "execution_count": 109,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/html": [
+              "<div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>1</th>\n",
+              "      <th>14.23</th>\n",
+              "      <th>1.71</th>\n",
+              "      <th>2.43</th>\n",
+              "      <th>15.6</th>\n",
+              "      <th>127</th>\n",
+              "      <th>2.8</th>\n",
+              "      <th>3.06</th>\n",
+              "      <th>.28</th>\n",
+              "      <th>2.29</th>\n",
+              "      <th>5.64</th>\n",
+              "      <th>1.04</th>\n",
+              "      <th>3.92</th>\n",
+              "      <th>1065</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.20</td>\n",
+              "      <td>1.78</td>\n",
+              "      <td>2.14</td>\n",
+              "      <td>11.2</td>\n",
+              "      <td>100</td>\n",
+              "      <td>2.65</td>\n",
+              "      <td>2.76</td>\n",
+              "      <td>0.26</td>\n",
+              "      <td>1.28</td>\n",
+              "      <td>4.38</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>3.40</td>\n",
+              "      <td>1050</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>1</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.16</td>\n",
+              "      <td>2.36</td>\n",
+              "      <td>2.67</td>\n",
+              "      <td>18.6</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>3.24</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>2.81</td>\n",
+              "      <td>5.68</td>\n",
+              "      <td>1.03</td>\n",
+              "      <td>3.17</td>\n",
+              "      <td>1185</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.37</td>\n",
+              "      <td>1.95</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>16.8</td>\n",
+              "      <td>113</td>\n",
+              "      <td>3.85</td>\n",
+              "      <td>3.49</td>\n",
+              "      <td>0.24</td>\n",
+              "      <td>2.18</td>\n",
+              "      <td>7.80</td>\n",
+              "      <td>0.86</td>\n",
+              "      <td>3.45</td>\n",
+              "      <td>1480</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.24</td>\n",
+              "      <td>2.59</td>\n",
+              "      <td>2.87</td>\n",
+              "      <td>21.0</td>\n",
+              "      <td>118</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.69</td>\n",
+              "      <td>0.39</td>\n",
+              "      <td>1.82</td>\n",
+              "      <td>4.32</td>\n",
+              "      <td>1.04</td>\n",
+              "      <td>2.93</td>\n",
+              "      <td>735</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.20</td>\n",
+              "      <td>1.76</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>15.2</td>\n",
+              "      <td>112</td>\n",
+              "      <td>3.27</td>\n",
+              "      <td>3.39</td>\n",
+              "      <td>0.34</td>\n",
+              "      <td>1.97</td>\n",
+              "      <td>6.75</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1450</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "</div>"
+            ],
+            "text/plain": [
+              "   1  14.23  1.71  2.43  15.6  127   2.8  3.06   .28  2.29  5.64  1.04  3.92  \\\n",
+              "0  1  13.20  1.78  2.14  11.2  100  2.65  2.76  0.26  1.28  4.38  1.05  3.40   \n",
+              "1  1  13.16  2.36  2.67  18.6  101  2.80  3.24  0.30  2.81  5.68  1.03  3.17   \n",
+              "2  1  14.37  1.95  2.50  16.8  113  3.85  3.49  0.24  2.18  7.80  0.86  3.45   \n",
+              "3  1  13.24  2.59  2.87  21.0  118  2.80  2.69  0.39  1.82  4.32  1.04  2.93   \n",
+              "4  1  14.20  1.76  2.45  15.2  112  3.27  3.39  0.34  1.97  6.75  1.05  2.85   \n",
+              "\n",
+              "   1065  \n",
+              "0  1050  \n",
+              "1  1185  \n",
+              "2  1480  \n",
+              "3   735  \n",
+              "4  1450  "
+            ]
+          },
+          "metadata": {
+            "tags": []
+          },
+          "execution_count": 109
+        }
+      ]
+    },
+    {
+      "metadata": {
+        "id": "Tet6P2DvjY3T",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "#### assign wine_df to a different variable wine_df_copy and then delete all odd rows of wine_df_copy\n",
+        "\n",
+        "[Hint](https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.drop.html)"
+      ]
+    },
+    {
+      "metadata": {
+        "id": "CMj3qSdJjx0u",
+        "colab_type": "code",
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 359
+        },
+        "outputId": "a6676447-dd0c-4866-9df4-34f02706caf0"
+      },
+      "cell_type": "code",
+      "source": [
+        "wine_df_copy = wine_df\n",
+        "wine_df_copy = wine_df_copy[wine_df_copy.index%2 == 0]\n",
+        "wine_df_copy.head(10)"
+      ],
+      "execution_count": 110,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/html": [
+              "<div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>1</th>\n",
+              "      <th>14.23</th>\n",
+              "      <th>1.71</th>\n",
+              "      <th>2.43</th>\n",
+              "      <th>15.6</th>\n",
+              "      <th>127</th>\n",
+              "      <th>2.8</th>\n",
+              "      <th>3.06</th>\n",
+              "      <th>.28</th>\n",
+              "      <th>2.29</th>\n",
+              "      <th>5.64</th>\n",
+              "      <th>1.04</th>\n",
+              "      <th>3.92</th>\n",
+              "      <th>1065</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.20</td>\n",
+              "      <td>1.78</td>\n",
+              "      <td>2.14</td>\n",
+              "      <td>11.2</td>\n",
+              "      <td>100</td>\n",
+              "      <td>2.65</td>\n",
+              "      <td>2.76</td>\n",
+              "      <td>0.26</td>\n",
+              "      <td>1.28</td>\n",
+              "      <td>4.38</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>3.40</td>\n",
+              "      <td>1050</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.37</td>\n",
+              "      <td>1.95</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>16.8</td>\n",
+              "      <td>113</td>\n",
+              "      <td>3.85</td>\n",
+              "      <td>3.49</td>\n",
+              "      <td>0.24</td>\n",
+              "      <td>2.18</td>\n",
+              "      <td>7.80</td>\n",
+              "      <td>0.86</td>\n",
+              "      <td>3.45</td>\n",
+              "      <td>1480</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.20</td>\n",
+              "      <td>1.76</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>15.2</td>\n",
+              "      <td>112</td>\n",
+              "      <td>3.27</td>\n",
+              "      <td>3.39</td>\n",
+              "      <td>0.34</td>\n",
+              "      <td>1.97</td>\n",
+              "      <td>6.75</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1450</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>6</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.06</td>\n",
+              "      <td>2.15</td>\n",
+              "      <td>2.61</td>\n",
+              "      <td>17.6</td>\n",
+              "      <td>121</td>\n",
+              "      <td>2.60</td>\n",
+              "      <td>2.51</td>\n",
+              "      <td>0.31</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>5.05</td>\n",
+              "      <td>1.06</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1295</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>8</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.86</td>\n",
+              "      <td>1.35</td>\n",
+              "      <td>2.27</td>\n",
+              "      <td>16.0</td>\n",
+              "      <td>98</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>3.15</td>\n",
+              "      <td>0.22</td>\n",
+              "      <td>1.85</td>\n",
+              "      <td>7.22</td>\n",
+              "      <td>1.01</td>\n",
+              "      <td>3.55</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>10</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.12</td>\n",
+              "      <td>1.48</td>\n",
+              "      <td>2.32</td>\n",
+              "      <td>16.8</td>\n",
+              "      <td>95</td>\n",
+              "      <td>2.20</td>\n",
+              "      <td>2.43</td>\n",
+              "      <td>0.26</td>\n",
+              "      <td>1.57</td>\n",
+              "      <td>5.00</td>\n",
+              "      <td>1.17</td>\n",
+              "      <td>2.82</td>\n",
+              "      <td>1280</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>12</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.75</td>\n",
+              "      <td>1.73</td>\n",
+              "      <td>2.39</td>\n",
+              "      <td>11.4</td>\n",
+              "      <td>91</td>\n",
+              "      <td>3.10</td>\n",
+              "      <td>3.69</td>\n",
+              "      <td>0.43</td>\n",
+              "      <td>2.81</td>\n",
+              "      <td>5.40</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>2.73</td>\n",
+              "      <td>1150</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>14</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.63</td>\n",
+              "      <td>1.81</td>\n",
+              "      <td>2.70</td>\n",
+              "      <td>17.2</td>\n",
+              "      <td>112</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>2.91</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>1.46</td>\n",
+              "      <td>7.30</td>\n",
+              "      <td>1.28</td>\n",
+              "      <td>2.88</td>\n",
+              "      <td>1310</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>16</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.83</td>\n",
+              "      <td>1.57</td>\n",
+              "      <td>2.62</td>\n",
+              "      <td>20.0</td>\n",
+              "      <td>115</td>\n",
+              "      <td>2.95</td>\n",
+              "      <td>3.40</td>\n",
+              "      <td>0.40</td>\n",
+              "      <td>1.72</td>\n",
+              "      <td>6.60</td>\n",
+              "      <td>1.13</td>\n",
+              "      <td>2.57</td>\n",
+              "      <td>1130</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>18</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.64</td>\n",
+              "      <td>3.10</td>\n",
+              "      <td>2.56</td>\n",
+              "      <td>15.2</td>\n",
+              "      <td>116</td>\n",
+              "      <td>2.70</td>\n",
+              "      <td>3.03</td>\n",
+              "      <td>0.17</td>\n",
+              "      <td>1.66</td>\n",
+              "      <td>5.10</td>\n",
+              "      <td>0.96</td>\n",
+              "      <td>3.36</td>\n",
+              "      <td>845</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "</div>"
+            ],
+            "text/plain": [
+              "    1  14.23  1.71  2.43  15.6  127   2.8  3.06   .28  2.29  5.64  1.04  3.92  \\\n",
+              "0   1  13.20  1.78  2.14  11.2  100  2.65  2.76  0.26  1.28  4.38  1.05  3.40   \n",
+              "2   1  14.37  1.95  2.50  16.8  113  3.85  3.49  0.24  2.18  7.80  0.86  3.45   \n",
+              "4   1  14.20  1.76  2.45  15.2  112  3.27  3.39  0.34  1.97  6.75  1.05  2.85   \n",
+              "6   1  14.06  2.15  2.61  17.6  121  2.60  2.51  0.31  1.25  5.05  1.06  3.58   \n",
+              "8   1  13.86  1.35  2.27  16.0   98  2.98  3.15  0.22  1.85  7.22  1.01  3.55   \n",
+              "10  1  14.12  1.48  2.32  16.8   95  2.20  2.43  0.26  1.57  5.00  1.17  2.82   \n",
+              "12  1  14.75  1.73  2.39  11.4   91  3.10  3.69  0.43  2.81  5.40  1.25  2.73   \n",
+              "14  1  13.63  1.81  2.70  17.2  112  2.85  2.91  0.30  1.46  7.30  1.28  2.88   \n",
+              "16  1  13.83  1.57  2.62  20.0  115  2.95  3.40  0.40  1.72  6.60  1.13  2.57   \n",
+              "18  1  13.64  3.10  2.56  15.2  116  2.70  3.03  0.17  1.66  5.10  0.96  3.36   \n",
+              "\n",
+              "    1065  \n",
+              "0   1050  \n",
+              "2   1480  \n",
+              "4   1450  \n",
+              "6   1295  \n",
+              "8   1045  \n",
+              "10  1280  \n",
+              "12  1150  \n",
+              "14  1310  \n",
+              "16  1130  \n",
+              "18   845  "
+            ]
+          },
+          "metadata": {
+            "tags": []
+          },
+          "execution_count": 110
+        }
+      ]
+    },
+    {
+      "metadata": {
+        "id": "o6Cs6T1Rjz71",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "#### Assign the columns as below:\n",
+        "\n",
+        "The attributes are (dontated by Riccardo Leardi, riclea '@' anchem.unige.it):  \n",
+        "1) Alcohol  \n",
+        "2) Malic acid  \n",
+        "3) Ash  \n",
+        "4) Alcalinity of ash  \n",
+        "5) Magnesium  \n",
+        "6) Total phenols  \n",
+        "7) Flavanoids  \n",
+        "8) Nonflavanoid phenols  \n",
+        "9) Proanthocyanins  \n",
+        "10)Color intensity  \n",
+        "11)Hue  \n",
+        "12)OD280/OD315 of diluted wines  \n",
+        "13)Proline "
+      ]
+    },
+    {
+      "metadata": {
+        "id": "my8HB4V4j779",
+        "colab_type": "code",
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 359
+        },
+        "outputId": "cf250a08-a1a8-43b2-8955-752f3c512750"
+      },
+      "cell_type": "code",
+      "source": [
+        "wine_df.columns = ['Alcohol','Malic acid','Ash','Alcalinity of ash','Magnesium','Total phenols','Flavanoids','Nonflavanoid phenols','Proanthocyanins','Color intensity','Hue','OD280/OD315 of diluted wines','Proline','Col-14']\n",
+        "wine_df.head(10)"
+      ],
+      "execution_count": 111,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/html": [
+              "<div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>Alcohol</th>\n",
+              "      <th>Malic acid</th>\n",
+              "      <th>Ash</th>\n",
+              "      <th>Alcalinity of ash</th>\n",
+              "      <th>Magnesium</th>\n",
+              "      <th>Total phenols</th>\n",
+              "      <th>Flavanoids</th>\n",
+              "      <th>Nonflavanoid phenols</th>\n",
+              "      <th>Proanthocyanins</th>\n",
+              "      <th>Color intensity</th>\n",
+              "      <th>Hue</th>\n",
+              "      <th>OD280/OD315 of diluted wines</th>\n",
+              "      <th>Proline</th>\n",
+              "      <th>Col-14</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.20</td>\n",
+              "      <td>1.78</td>\n",
+              "      <td>2.14</td>\n",
+              "      <td>11.2</td>\n",
+              "      <td>100</td>\n",
+              "      <td>2.65</td>\n",
+              "      <td>2.76</td>\n",
+              "      <td>0.26</td>\n",
+              "      <td>1.28</td>\n",
+              "      <td>4.38</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>3.40</td>\n",
+              "      <td>1050</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>1</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.16</td>\n",
+              "      <td>2.36</td>\n",
+              "      <td>2.67</td>\n",
+              "      <td>18.6</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>3.24</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>2.81</td>\n",
+              "      <td>5.68</td>\n",
+              "      <td>1.03</td>\n",
+              "      <td>3.17</td>\n",
+              "      <td>1185</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.37</td>\n",
+              "      <td>1.95</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>16.8</td>\n",
+              "      <td>113</td>\n",
+              "      <td>3.85</td>\n",
+              "      <td>3.49</td>\n",
+              "      <td>0.24</td>\n",
+              "      <td>2.18</td>\n",
+              "      <td>7.80</td>\n",
+              "      <td>0.86</td>\n",
+              "      <td>3.45</td>\n",
+              "      <td>1480</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.24</td>\n",
+              "      <td>2.59</td>\n",
+              "      <td>2.87</td>\n",
+              "      <td>21.0</td>\n",
+              "      <td>118</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.69</td>\n",
+              "      <td>0.39</td>\n",
+              "      <td>1.82</td>\n",
+              "      <td>4.32</td>\n",
+              "      <td>1.04</td>\n",
+              "      <td>2.93</td>\n",
+              "      <td>735</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.20</td>\n",
+              "      <td>1.76</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>15.2</td>\n",
+              "      <td>112</td>\n",
+              "      <td>3.27</td>\n",
+              "      <td>3.39</td>\n",
+              "      <td>0.34</td>\n",
+              "      <td>1.97</td>\n",
+              "      <td>6.75</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1450</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>5</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.39</td>\n",
+              "      <td>1.87</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>14.6</td>\n",
+              "      <td>96</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>2.52</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.25</td>\n",
+              "      <td>1.02</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1290</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>6</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.06</td>\n",
+              "      <td>2.15</td>\n",
+              "      <td>2.61</td>\n",
+              "      <td>17.6</td>\n",
+              "      <td>121</td>\n",
+              "      <td>2.60</td>\n",
+              "      <td>2.51</td>\n",
+              "      <td>0.31</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>5.05</td>\n",
+              "      <td>1.06</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1295</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>7</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.83</td>\n",
+              "      <td>1.64</td>\n",
+              "      <td>2.17</td>\n",
+              "      <td>14.0</td>\n",
+              "      <td>97</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>0.29</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.20</td>\n",
+              "      <td>1.08</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>8</th>\n",
+              "      <td>1</td>\n",
+              "      <td>13.86</td>\n",
+              "      <td>1.35</td>\n",
+              "      <td>2.27</td>\n",
+              "      <td>16.0</td>\n",
+              "      <td>98</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>3.15</td>\n",
+              "      <td>0.22</td>\n",
+              "      <td>1.85</td>\n",
+              "      <td>7.22</td>\n",
+              "      <td>1.01</td>\n",
+              "      <td>3.55</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>9</th>\n",
+              "      <td>1</td>\n",
+              "      <td>14.10</td>\n",
+              "      <td>2.16</td>\n",
+              "      <td>2.30</td>\n",
+              "      <td>18.0</td>\n",
+              "      <td>105</td>\n",
+              "      <td>2.95</td>\n",
+              "      <td>3.32</td>\n",
+              "      <td>0.22</td>\n",
+              "      <td>2.38</td>\n",
+              "      <td>5.75</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>3.17</td>\n",
+              "      <td>1510</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "</div>"
+            ],
+            "text/plain": [
+              "   Alcohol  Malic acid   Ash  Alcalinity of ash  Magnesium  Total phenols  \\\n",
+              "0        1       13.20  1.78               2.14       11.2            100   \n",
+              "1        1       13.16  2.36               2.67       18.6            101   \n",
+              "2        1       14.37  1.95               2.50       16.8            113   \n",
+              "3        1       13.24  2.59               2.87       21.0            118   \n",
+              "4        1       14.20  1.76               2.45       15.2            112   \n",
+              "5        1       14.39  1.87               2.45       14.6             96   \n",
+              "6        1       14.06  2.15               2.61       17.6            121   \n",
+              "7        1       14.83  1.64               2.17       14.0             97   \n",
+              "8        1       13.86  1.35               2.27       16.0             98   \n",
+              "9        1       14.10  2.16               2.30       18.0            105   \n",
+              "\n",
+              "   Flavanoids  Nonflavanoid phenols  Proanthocyanins  Color intensity   Hue  \\\n",
+              "0        2.65                  2.76             0.26             1.28  4.38   \n",
+              "1        2.80                  3.24             0.30             2.81  5.68   \n",
+              "2        3.85                  3.49             0.24             2.18  7.80   \n",
+              "3        2.80                  2.69             0.39             1.82  4.32   \n",
+              "4        3.27                  3.39             0.34             1.97  6.75   \n",
+              "5        2.50                  2.52             0.30             1.98  5.25   \n",
+              "6        2.60                  2.51             0.31             1.25  5.05   \n",
+              "7        2.80                  2.98             0.29             1.98  5.20   \n",
+              "8        2.98                  3.15             0.22             1.85  7.22   \n",
+              "9        2.95                  3.32             0.22             2.38  5.75   \n",
+              "\n",
+              "   OD280/OD315 of diluted wines  Proline  Col-14  \n",
+              "0                          1.05     3.40    1050  \n",
+              "1                          1.03     3.17    1185  \n",
+              "2                          0.86     3.45    1480  \n",
+              "3                          1.04     2.93     735  \n",
+              "4                          1.05     2.85    1450  \n",
+              "5                          1.02     3.58    1290  \n",
+              "6                          1.06     3.58    1295  \n",
+              "7                          1.08     2.85    1045  \n",
+              "8                          1.01     3.55    1045  \n",
+              "9                          1.25     3.17    1510  "
+            ]
+          },
+          "metadata": {
+            "tags": []
+          },
+          "execution_count": 111
+        }
+      ]
+    },
+    {
+      "metadata": {
+        "id": "Zqi7hwWpkNbH",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "#### Set the values of the first 3 rows from alcohol as NaN\n",
+        "\n",
+        "Hint- Use iloc to select 3 rows of wine_df"
+      ]
+    },
+    {
+      "metadata": {
+        "id": "buyT4vX4kPMl",
+        "colab_type": "code",
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 444
+        },
+        "outputId": "75d93567-4646-4ab4-bea1-fd067d881dcf"
+      },
+      "cell_type": "code",
+      "source": [
+        "wine_df.Alcohol.iloc[:3] = np.nan\n",
+        "wine_df.head(10)"
+      ],
+      "execution_count": 112,
+      "outputs": [
+        {
+          "output_type": "stream",
+          "text": [
+            "/usr/local/lib/python3.6/dist-packages/pandas/core/indexing.py:194: SettingWithCopyWarning: \n",
+            "A value is trying to be set on a copy of a slice from a DataFrame\n",
+            "\n",
+            "See the caveats in the documentation: http://pandas.pydata.org/pandas-docs/stable/indexing.html#indexing-view-versus-copy\n",
+            "  self._setitem_with_indexer(indexer, value)\n"
+          ],
+          "name": "stderr"
+        },
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/html": [
+              "<div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>Alcohol</th>\n",
+              "      <th>Malic acid</th>\n",
+              "      <th>Ash</th>\n",
+              "      <th>Alcalinity of ash</th>\n",
+              "      <th>Magnesium</th>\n",
+              "      <th>Total phenols</th>\n",
+              "      <th>Flavanoids</th>\n",
+              "      <th>Nonflavanoid phenols</th>\n",
+              "      <th>Proanthocyanins</th>\n",
+              "      <th>Color intensity</th>\n",
+              "      <th>Hue</th>\n",
+              "      <th>OD280/OD315 of diluted wines</th>\n",
+              "      <th>Proline</th>\n",
+              "      <th>Col-14</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>NaN</td>\n",
+              "      <td>13.20</td>\n",
+              "      <td>1.78</td>\n",
+              "      <td>2.14</td>\n",
+              "      <td>11.2</td>\n",
+              "      <td>100</td>\n",
+              "      <td>2.65</td>\n",
+              "      <td>2.76</td>\n",
+              "      <td>0.26</td>\n",
+              "      <td>1.28</td>\n",
+              "      <td>4.38</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>3.40</td>\n",
+              "      <td>1050</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>1</th>\n",
+              "      <td>NaN</td>\n",
+              "      <td>13.16</td>\n",
+              "      <td>2.36</td>\n",
+              "      <td>2.67</td>\n",
+              "      <td>18.6</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>3.24</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>2.81</td>\n",
+              "      <td>5.68</td>\n",
+              "      <td>1.03</td>\n",
+              "      <td>3.17</td>\n",
+              "      <td>1185</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>NaN</td>\n",
+              "      <td>14.37</td>\n",
+              "      <td>1.95</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>16.8</td>\n",
+              "      <td>113</td>\n",
+              "      <td>3.85</td>\n",
+              "      <td>3.49</td>\n",
+              "      <td>0.24</td>\n",
+              "      <td>2.18</td>\n",
+              "      <td>7.80</td>\n",
+              "      <td>0.86</td>\n",
+              "      <td>3.45</td>\n",
+              "      <td>1480</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>13.24</td>\n",
+              "      <td>2.59</td>\n",
+              "      <td>2.87</td>\n",
+              "      <td>21.0</td>\n",
+              "      <td>118</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.69</td>\n",
+              "      <td>0.39</td>\n",
+              "      <td>1.82</td>\n",
+              "      <td>4.32</td>\n",
+              "      <td>1.04</td>\n",
+              "      <td>2.93</td>\n",
+              "      <td>735</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.20</td>\n",
+              "      <td>1.76</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>15.2</td>\n",
+              "      <td>112</td>\n",
+              "      <td>3.27</td>\n",
+              "      <td>3.39</td>\n",
+              "      <td>0.34</td>\n",
+              "      <td>1.97</td>\n",
+              "      <td>6.75</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1450</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>5</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.39</td>\n",
+              "      <td>1.87</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>14.6</td>\n",
+              "      <td>96</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>2.52</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.25</td>\n",
+              "      <td>1.02</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1290</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>6</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.06</td>\n",
+              "      <td>2.15</td>\n",
+              "      <td>2.61</td>\n",
+              "      <td>17.6</td>\n",
+              "      <td>121</td>\n",
+              "      <td>2.60</td>\n",
+              "      <td>2.51</td>\n",
+              "      <td>0.31</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>5.05</td>\n",
+              "      <td>1.06</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1295</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>7</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.83</td>\n",
+              "      <td>1.64</td>\n",
+              "      <td>2.17</td>\n",
+              "      <td>14.0</td>\n",
+              "      <td>97</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>0.29</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.20</td>\n",
+              "      <td>1.08</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>8</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>13.86</td>\n",
+              "      <td>1.35</td>\n",
+              "      <td>2.27</td>\n",
+              "      <td>16.0</td>\n",
+              "      <td>98</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>3.15</td>\n",
+              "      <td>0.22</td>\n",
+              "      <td>1.85</td>\n",
+              "      <td>7.22</td>\n",
+              "      <td>1.01</td>\n",
+              "      <td>3.55</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>9</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.10</td>\n",
+              "      <td>2.16</td>\n",
+              "      <td>2.30</td>\n",
+              "      <td>18.0</td>\n",
+              "      <td>105</td>\n",
+              "      <td>2.95</td>\n",
+              "      <td>3.32</td>\n",
+              "      <td>0.22</td>\n",
+              "      <td>2.38</td>\n",
+              "      <td>5.75</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>3.17</td>\n",
+              "      <td>1510</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "</div>"
+            ],
+            "text/plain": [
+              "   Alcohol  Malic acid   Ash  Alcalinity of ash  Magnesium  Total phenols  \\\n",
+              "0      NaN       13.20  1.78               2.14       11.2            100   \n",
+              "1      NaN       13.16  2.36               2.67       18.6            101   \n",
+              "2      NaN       14.37  1.95               2.50       16.8            113   \n",
+              "3      1.0       13.24  2.59               2.87       21.0            118   \n",
+              "4      1.0       14.20  1.76               2.45       15.2            112   \n",
+              "5      1.0       14.39  1.87               2.45       14.6             96   \n",
+              "6      1.0       14.06  2.15               2.61       17.6            121   \n",
+              "7      1.0       14.83  1.64               2.17       14.0             97   \n",
+              "8      1.0       13.86  1.35               2.27       16.0             98   \n",
+              "9      1.0       14.10  2.16               2.30       18.0            105   \n",
+              "\n",
+              "   Flavanoids  Nonflavanoid phenols  Proanthocyanins  Color intensity   Hue  \\\n",
+              "0        2.65                  2.76             0.26             1.28  4.38   \n",
+              "1        2.80                  3.24             0.30             2.81  5.68   \n",
+              "2        3.85                  3.49             0.24             2.18  7.80   \n",
+              "3        2.80                  2.69             0.39             1.82  4.32   \n",
+              "4        3.27                  3.39             0.34             1.97  6.75   \n",
+              "5        2.50                  2.52             0.30             1.98  5.25   \n",
+              "6        2.60                  2.51             0.31             1.25  5.05   \n",
+              "7        2.80                  2.98             0.29             1.98  5.20   \n",
+              "8        2.98                  3.15             0.22             1.85  7.22   \n",
+              "9        2.95                  3.32             0.22             2.38  5.75   \n",
+              "\n",
+              "   OD280/OD315 of diluted wines  Proline  Col-14  \n",
+              "0                          1.05     3.40    1050  \n",
+              "1                          1.03     3.17    1185  \n",
+              "2                          0.86     3.45    1480  \n",
+              "3                          1.04     2.93     735  \n",
+              "4                          1.05     2.85    1450  \n",
+              "5                          1.02     3.58    1290  \n",
+              "6                          1.06     3.58    1295  \n",
+              "7                          1.08     2.85    1045  \n",
+              "8                          1.01     3.55    1045  \n",
+              "9                          1.25     3.17    1510  "
+            ]
+          },
+          "metadata": {
+            "tags": []
+          },
+          "execution_count": 112
+        }
+      ]
+    },
+    {
+      "metadata": {
+        "id": "RQMNI2UHkP3o",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "#### Create an array of 10 random numbers uptill 10 and assign it to a  variable named `random`"
+      ]
+    },
+    {
+      "metadata": {
+        "id": "xunmCjaEmDwZ",
+        "colab_type": "code",
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 34
+        },
+        "outputId": "eff253d6-a5ef-425f-fc8e-abb78c499c9f"
+      },
+      "cell_type": "code",
+      "source": [
+        "random = np.random.randint(1,10,10)\n",
+        "print(random)"
+      ],
+      "execution_count": 113,
+      "outputs": [
+        {
+          "output_type": "stream",
+          "text": [
+            "[8 2 1 9 6 6 9 2 9 2]\n"
+          ],
+          "name": "stdout"
+        }
+      ]
+    },
+    {
+      "metadata": {
+        "id": "hELUakyXmFSu",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "#### Use random numbers you generated as an index and assign NaN value to each of cell of the column alcohol"
+      ]
+    },
+    {
+      "metadata": {
+        "id": "zMgaNnNHmP01",
+        "colab_type": "code",
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 359
+        },
+        "outputId": "a9f82ab3-b77d-47e2-fec3-d12bf130fc86"
+      },
+      "cell_type": "code",
+      "source": [
+        "wine_df.Alcohol.iloc[random] = np.nan\n",
+        "wine_df.head(10)"
+      ],
+      "execution_count": 114,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/html": [
+              "<div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>Alcohol</th>\n",
+              "      <th>Malic acid</th>\n",
+              "      <th>Ash</th>\n",
+              "      <th>Alcalinity of ash</th>\n",
+              "      <th>Magnesium</th>\n",
+              "      <th>Total phenols</th>\n",
+              "      <th>Flavanoids</th>\n",
+              "      <th>Nonflavanoid phenols</th>\n",
+              "      <th>Proanthocyanins</th>\n",
+              "      <th>Color intensity</th>\n",
+              "      <th>Hue</th>\n",
+              "      <th>OD280/OD315 of diluted wines</th>\n",
+              "      <th>Proline</th>\n",
+              "      <th>Col-14</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>0</th>\n",
+              "      <td>NaN</td>\n",
+              "      <td>13.20</td>\n",
+              "      <td>1.78</td>\n",
+              "      <td>2.14</td>\n",
+              "      <td>11.2</td>\n",
+              "      <td>100</td>\n",
+              "      <td>2.65</td>\n",
+              "      <td>2.76</td>\n",
+              "      <td>0.26</td>\n",
+              "      <td>1.28</td>\n",
+              "      <td>4.38</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>3.40</td>\n",
+              "      <td>1050</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>1</th>\n",
+              "      <td>NaN</td>\n",
+              "      <td>13.16</td>\n",
+              "      <td>2.36</td>\n",
+              "      <td>2.67</td>\n",
+              "      <td>18.6</td>\n",
+              "      <td>101</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>3.24</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>2.81</td>\n",
+              "      <td>5.68</td>\n",
+              "      <td>1.03</td>\n",
+              "      <td>3.17</td>\n",
+              "      <td>1185</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>2</th>\n",
+              "      <td>NaN</td>\n",
+              "      <td>14.37</td>\n",
+              "      <td>1.95</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>16.8</td>\n",
+              "      <td>113</td>\n",
+              "      <td>3.85</td>\n",
+              "      <td>3.49</td>\n",
+              "      <td>0.24</td>\n",
+              "      <td>2.18</td>\n",
+              "      <td>7.80</td>\n",
+              "      <td>0.86</td>\n",
+              "      <td>3.45</td>\n",
+              "      <td>1480</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>13.24</td>\n",
+              "      <td>2.59</td>\n",
+              "      <td>2.87</td>\n",
+              "      <td>21.0</td>\n",
+              "      <td>118</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.69</td>\n",
+              "      <td>0.39</td>\n",
+              "      <td>1.82</td>\n",
+              "      <td>4.32</td>\n",
+              "      <td>1.04</td>\n",
+              "      <td>2.93</td>\n",
+              "      <td>735</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.20</td>\n",
+              "      <td>1.76</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>15.2</td>\n",
+              "      <td>112</td>\n",
+              "      <td>3.27</td>\n",
+              "      <td>3.39</td>\n",
+              "      <td>0.34</td>\n",
+              "      <td>1.97</td>\n",
+              "      <td>6.75</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1450</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>5</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.39</td>\n",
+              "      <td>1.87</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>14.6</td>\n",
+              "      <td>96</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>2.52</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.25</td>\n",
+              "      <td>1.02</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1290</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>6</th>\n",
+              "      <td>NaN</td>\n",
+              "      <td>14.06</td>\n",
+              "      <td>2.15</td>\n",
+              "      <td>2.61</td>\n",
+              "      <td>17.6</td>\n",
+              "      <td>121</td>\n",
+              "      <td>2.60</td>\n",
+              "      <td>2.51</td>\n",
+              "      <td>0.31</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>5.05</td>\n",
+              "      <td>1.06</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1295</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>7</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.83</td>\n",
+              "      <td>1.64</td>\n",
+              "      <td>2.17</td>\n",
+              "      <td>14.0</td>\n",
+              "      <td>97</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>0.29</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.20</td>\n",
+              "      <td>1.08</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>8</th>\n",
+              "      <td>NaN</td>\n",
+              "      <td>13.86</td>\n",
+              "      <td>1.35</td>\n",
+              "      <td>2.27</td>\n",
+              "      <td>16.0</td>\n",
+              "      <td>98</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>3.15</td>\n",
+              "      <td>0.22</td>\n",
+              "      <td>1.85</td>\n",
+              "      <td>7.22</td>\n",
+              "      <td>1.01</td>\n",
+              "      <td>3.55</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>9</th>\n",
+              "      <td>NaN</td>\n",
+              "      <td>14.10</td>\n",
+              "      <td>2.16</td>\n",
+              "      <td>2.30</td>\n",
+              "      <td>18.0</td>\n",
+              "      <td>105</td>\n",
+              "      <td>2.95</td>\n",
+              "      <td>3.32</td>\n",
+              "      <td>0.22</td>\n",
+              "      <td>2.38</td>\n",
+              "      <td>5.75</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>3.17</td>\n",
+              "      <td>1510</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "</div>"
+            ],
+            "text/plain": [
+              "   Alcohol  Malic acid   Ash  Alcalinity of ash  Magnesium  Total phenols  \\\n",
+              "0      NaN       13.20  1.78               2.14       11.2            100   \n",
+              "1      NaN       13.16  2.36               2.67       18.6            101   \n",
+              "2      NaN       14.37  1.95               2.50       16.8            113   \n",
+              "3      1.0       13.24  2.59               2.87       21.0            118   \n",
+              "4      1.0       14.20  1.76               2.45       15.2            112   \n",
+              "5      1.0       14.39  1.87               2.45       14.6             96   \n",
+              "6      NaN       14.06  2.15               2.61       17.6            121   \n",
+              "7      1.0       14.83  1.64               2.17       14.0             97   \n",
+              "8      NaN       13.86  1.35               2.27       16.0             98   \n",
+              "9      NaN       14.10  2.16               2.30       18.0            105   \n",
+              "\n",
+              "   Flavanoids  Nonflavanoid phenols  Proanthocyanins  Color intensity   Hue  \\\n",
+              "0        2.65                  2.76             0.26             1.28  4.38   \n",
+              "1        2.80                  3.24             0.30             2.81  5.68   \n",
+              "2        3.85                  3.49             0.24             2.18  7.80   \n",
+              "3        2.80                  2.69             0.39             1.82  4.32   \n",
+              "4        3.27                  3.39             0.34             1.97  6.75   \n",
+              "5        2.50                  2.52             0.30             1.98  5.25   \n",
+              "6        2.60                  2.51             0.31             1.25  5.05   \n",
+              "7        2.80                  2.98             0.29             1.98  5.20   \n",
+              "8        2.98                  3.15             0.22             1.85  7.22   \n",
+              "9        2.95                  3.32             0.22             2.38  5.75   \n",
+              "\n",
+              "   OD280/OD315 of diluted wines  Proline  Col-14  \n",
+              "0                          1.05     3.40    1050  \n",
+              "1                          1.03     3.17    1185  \n",
+              "2                          0.86     3.45    1480  \n",
+              "3                          1.04     2.93     735  \n",
+              "4                          1.05     2.85    1450  \n",
+              "5                          1.02     3.58    1290  \n",
+              "6                          1.06     3.58    1295  \n",
+              "7                          1.08     2.85    1045  \n",
+              "8                          1.01     3.55    1045  \n",
+              "9                          1.25     3.17    1510  "
+            ]
+          },
+          "metadata": {
+            "tags": []
+          },
+          "execution_count": 114
+        }
+      ]
+    },
+    {
+      "metadata": {
+        "id": "PHyK_vRsmRwV",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "####  How many missing values do we have? \n",
+        "\n",
+        "Hint: you can use isnull() and sum()"
+      ]
+    },
+    {
+      "metadata": {
+        "id": "EnOYhmEqmfKp",
+        "colab_type": "code",
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 272
+        },
+        "outputId": "409c61b1-0d47-416d-adcf-07e3c452ba94"
+      },
+      "cell_type": "code",
+      "source": [
+        "print((wine_df.isnull()).sum())"
+      ],
+      "execution_count": 115,
+      "outputs": [
+        {
+          "output_type": "stream",
+          "text": [
+            "Alcohol                         6\n",
+            "Malic acid                      0\n",
+            "Ash                             0\n",
+            "Alcalinity of ash               0\n",
+            "Magnesium                       0\n",
+            "Total phenols                   0\n",
+            "Flavanoids                      0\n",
+            "Nonflavanoid phenols            0\n",
+            "Proanthocyanins                 0\n",
+            "Color intensity                 0\n",
+            "Hue                             0\n",
+            "OD280/OD315 of diluted wines    0\n",
+            "Proline                         0\n",
+            "Col-14                          0\n",
+            "dtype: int64\n"
+          ],
+          "name": "stdout"
+        }
+      ]
+    },
+    {
+      "metadata": {
+        "id": "-Fd4WBklmf1_",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "#### Delete the rows that contain missing values "
+      ]
+    },
+    {
+      "metadata": {
+        "id": "As7IC6Ktms8-",
+        "colab_type": "code",
+        "colab": {
+          "base_uri": "https://localhost:8080/",
+          "height": 359
+        },
+        "outputId": "a79d4627-4676-45e1-8ebf-24b64f5b9a99"
+      },
+      "cell_type": "code",
+      "source": [
+        "wine_df = wine_df.dropna(how='any',axis=0)\n",
+        "wine_df.head(10)"
+      ],
+      "execution_count": 116,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/html": [
+              "<div>\n",
+              "<style scoped>\n",
+              "    .dataframe tbody tr th:only-of-type {\n",
+              "        vertical-align: middle;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe tbody tr th {\n",
+              "        vertical-align: top;\n",
+              "    }\n",
+              "\n",
+              "    .dataframe thead th {\n",
+              "        text-align: right;\n",
+              "    }\n",
+              "</style>\n",
+              "<table border=\"1\" class=\"dataframe\">\n",
+              "  <thead>\n",
+              "    <tr style=\"text-align: right;\">\n",
+              "      <th></th>\n",
+              "      <th>Alcohol</th>\n",
+              "      <th>Malic acid</th>\n",
+              "      <th>Ash</th>\n",
+              "      <th>Alcalinity of ash</th>\n",
+              "      <th>Magnesium</th>\n",
+              "      <th>Total phenols</th>\n",
+              "      <th>Flavanoids</th>\n",
+              "      <th>Nonflavanoid phenols</th>\n",
+              "      <th>Proanthocyanins</th>\n",
+              "      <th>Color intensity</th>\n",
+              "      <th>Hue</th>\n",
+              "      <th>OD280/OD315 of diluted wines</th>\n",
+              "      <th>Proline</th>\n",
+              "      <th>Col-14</th>\n",
+              "    </tr>\n",
+              "  </thead>\n",
+              "  <tbody>\n",
+              "    <tr>\n",
+              "      <th>3</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>13.24</td>\n",
+              "      <td>2.59</td>\n",
+              "      <td>2.87</td>\n",
+              "      <td>21.0</td>\n",
+              "      <td>118</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.69</td>\n",
+              "      <td>0.39</td>\n",
+              "      <td>1.82</td>\n",
+              "      <td>4.32</td>\n",
+              "      <td>1.04</td>\n",
+              "      <td>2.93</td>\n",
+              "      <td>735</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>4</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.20</td>\n",
+              "      <td>1.76</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>15.2</td>\n",
+              "      <td>112</td>\n",
+              "      <td>3.27</td>\n",
+              "      <td>3.39</td>\n",
+              "      <td>0.34</td>\n",
+              "      <td>1.97</td>\n",
+              "      <td>6.75</td>\n",
+              "      <td>1.05</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1450</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>5</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.39</td>\n",
+              "      <td>1.87</td>\n",
+              "      <td>2.45</td>\n",
+              "      <td>14.6</td>\n",
+              "      <td>96</td>\n",
+              "      <td>2.50</td>\n",
+              "      <td>2.52</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.25</td>\n",
+              "      <td>1.02</td>\n",
+              "      <td>3.58</td>\n",
+              "      <td>1290</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>7</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.83</td>\n",
+              "      <td>1.64</td>\n",
+              "      <td>2.17</td>\n",
+              "      <td>14.0</td>\n",
+              "      <td>97</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>2.98</td>\n",
+              "      <td>0.29</td>\n",
+              "      <td>1.98</td>\n",
+              "      <td>5.20</td>\n",
+              "      <td>1.08</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>1045</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>10</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.12</td>\n",
+              "      <td>1.48</td>\n",
+              "      <td>2.32</td>\n",
+              "      <td>16.8</td>\n",
+              "      <td>95</td>\n",
+              "      <td>2.20</td>\n",
+              "      <td>2.43</td>\n",
+              "      <td>0.26</td>\n",
+              "      <td>1.57</td>\n",
+              "      <td>5.00</td>\n",
+              "      <td>1.17</td>\n",
+              "      <td>2.82</td>\n",
+              "      <td>1280</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>11</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>13.75</td>\n",
+              "      <td>1.73</td>\n",
+              "      <td>2.41</td>\n",
+              "      <td>16.0</td>\n",
+              "      <td>89</td>\n",
+              "      <td>2.60</td>\n",
+              "      <td>2.76</td>\n",
+              "      <td>0.29</td>\n",
+              "      <td>1.81</td>\n",
+              "      <td>5.60</td>\n",
+              "      <td>1.15</td>\n",
+              "      <td>2.90</td>\n",
+              "      <td>1320</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>12</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.75</td>\n",
+              "      <td>1.73</td>\n",
+              "      <td>2.39</td>\n",
+              "      <td>11.4</td>\n",
+              "      <td>91</td>\n",
+              "      <td>3.10</td>\n",
+              "      <td>3.69</td>\n",
+              "      <td>0.43</td>\n",
+              "      <td>2.81</td>\n",
+              "      <td>5.40</td>\n",
+              "      <td>1.25</td>\n",
+              "      <td>2.73</td>\n",
+              "      <td>1150</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>13</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.38</td>\n",
+              "      <td>1.87</td>\n",
+              "      <td>2.38</td>\n",
+              "      <td>12.0</td>\n",
+              "      <td>102</td>\n",
+              "      <td>3.30</td>\n",
+              "      <td>3.64</td>\n",
+              "      <td>0.29</td>\n",
+              "      <td>2.96</td>\n",
+              "      <td>7.50</td>\n",
+              "      <td>1.20</td>\n",
+              "      <td>3.00</td>\n",
+              "      <td>1547</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>14</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>13.63</td>\n",
+              "      <td>1.81</td>\n",
+              "      <td>2.70</td>\n",
+              "      <td>17.2</td>\n",
+              "      <td>112</td>\n",
+              "      <td>2.85</td>\n",
+              "      <td>2.91</td>\n",
+              "      <td>0.30</td>\n",
+              "      <td>1.46</td>\n",
+              "      <td>7.30</td>\n",
+              "      <td>1.28</td>\n",
+              "      <td>2.88</td>\n",
+              "      <td>1310</td>\n",
+              "    </tr>\n",
+              "    <tr>\n",
+              "      <th>15</th>\n",
+              "      <td>1.0</td>\n",
+              "      <td>14.30</td>\n",
+              "      <td>1.92</td>\n",
+              "      <td>2.72</td>\n",
+              "      <td>20.0</td>\n",
+              "      <td>120</td>\n",
+              "      <td>2.80</td>\n",
+              "      <td>3.14</td>\n",
+              "      <td>0.33</td>\n",
+              "      <td>1.97</td>\n",
+              "      <td>6.20</td>\n",
+              "      <td>1.07</td>\n",
+              "      <td>2.65</td>\n",
+              "      <td>1280</td>\n",
+              "    </tr>\n",
+              "  </tbody>\n",
+              "</table>\n",
+              "</div>"
+            ],
+            "text/plain": [
+              "    Alcohol  Malic acid   Ash  Alcalinity of ash  Magnesium  Total phenols  \\\n",
+              "3       1.0       13.24  2.59               2.87       21.0            118   \n",
+              "4       1.0       14.20  1.76               2.45       15.2            112   \n",
+              "5       1.0       14.39  1.87               2.45       14.6             96   \n",
+              "7       1.0       14.83  1.64               2.17       14.0             97   \n",
+              "10      1.0       14.12  1.48               2.32       16.8             95   \n",
+              "11      1.0       13.75  1.73               2.41       16.0             89   \n",
+              "12      1.0       14.75  1.73               2.39       11.4             91   \n",
+              "13      1.0       14.38  1.87               2.38       12.0            102   \n",
+              "14      1.0       13.63  1.81               2.70       17.2            112   \n",
+              "15      1.0       14.30  1.92               2.72       20.0            120   \n",
+              "\n",
+              "    Flavanoids  Nonflavanoid phenols  Proanthocyanins  Color intensity   Hue  \\\n",
+              "3         2.80                  2.69             0.39             1.82  4.32   \n",
+              "4         3.27                  3.39             0.34             1.97  6.75   \n",
+              "5         2.50                  2.52             0.30             1.98  5.25   \n",
+              "7         2.80                  2.98             0.29             1.98  5.20   \n",
+              "10        2.20                  2.43             0.26             1.57  5.00   \n",
+              "11        2.60                  2.76             0.29             1.81  5.60   \n",
+              "12        3.10                  3.69             0.43             2.81  5.40   \n",
+              "13        3.30                  3.64             0.29             2.96  7.50   \n",
+              "14        2.85                  2.91             0.30             1.46  7.30   \n",
+              "15        2.80                  3.14             0.33             1.97  6.20   \n",
+              "\n",
+              "    OD280/OD315 of diluted wines  Proline  Col-14  \n",
+              "3                           1.04     2.93     735  \n",
+              "4                           1.05     2.85    1450  \n",
+              "5                           1.02     3.58    1290  \n",
+              "7                           1.08     2.85    1045  \n",
+              "10                          1.17     2.82    1280  \n",
+              "11                          1.15     2.90    1320  \n",
+              "12                          1.25     2.73    1150  \n",
+              "13                          1.20     3.00    1547  \n",
+              "14                          1.28     2.88    1310  \n",
+              "15                          1.07     2.65    1280  "
+            ]
+          },
+          "metadata": {
+            "tags": []
+          },
+          "execution_count": 116
+        }
+      ]
+    },
+    {
+      "metadata": {
+        "id": "DlpG8drhmz7W",
+        "colab_type": "text"
+      },
+      "cell_type": "markdown",
+      "source": [
+        "### BONUS: Play with the data set below"
+      ]
+    },
+    {
+      "metadata": {
+        "id": "mD40T0Cnm5SA",
+        "colab_type": "code",
+        "colab": {}
+      },
+      "cell_type": "code",
+      "source": [
+        "#exam next week, will play later :-P"
+      ],
+      "execution_count": 0,
+      "outputs": []
+    }
+  ]
+}
\ No newline at end of file