4 minute read

Exercise from Jose Portilla Python for Data Science Bootcamp.

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Now Lets get started

Logistic Regression Project

In this project we will be working with a fake advertising data set, indicating whether or not a particular internet user clicked on an Advertisement. We will try to create a model that will predict whether or not they will click on an ad based off the features of that user.

This data set contains the following features:

  • ‘Daily Time Spent on Site’: consumer time on site in minutes
  • ‘Age’: cutomer age in years
  • ‘Area Income’: Avg. Income of geographical area of consumer
  • ‘Daily Internet Usage’: Avg. minutes a day consumer is on the internet
  • ‘Ad Topic Line’: Headline of the advertisement
  • ‘City’: City of consumer
  • ‘Male’: Whether or not consumer was male
  • ‘Country’: Country of consumer
  • ‘Timestamp’: Time at which consumer clicked on Ad or closed window
  • ‘Clicked on Ad’: 0 or 1 indicated clicking on Ad

Import Libraries

Import a few libraries you think you’ll need (Or just import them as you go along!)

import pandas as pd 
import numpy as np 
import matplotlib.pyplot as plt 
import seaborn as sns 

%matplotlib inline

Get the Data

Read in the advertising.csv file and set it to a data frame called ad_data.

ad_data = pd.read_csv('advertising.csv')

Check the head of ad_data

ad_data.head()
Daily Time Spent on Site Age Area Income Daily Internet Usage Ad Topic Line City Male Country Timestamp Clicked on Ad
0 68.95 35 61833.90 256.09 Cloned 5thgeneration orchestration Wrightburgh 0 Tunisia 2016-03-27 00:53:11 0
1 80.23 31 68441.85 193.77 Monitored national standardization West Jodi 1 Nauru 2016-04-04 01:39:02 0
2 69.47 26 59785.94 236.50 Organic bottom-line service-desk Davidton 0 San Marino 2016-03-13 20:35:42 0
3 74.15 29 54806.18 245.89 Triple-buffered reciprocal time-frame West Terrifurt 1 Italy 2016-01-10 02:31:19 0
4 68.37 35 73889.99 225.58 Robust logistical utilization South Manuel 0 Iceland 2016-06-03 03:36:18 0

** Use info and describe() on ad_data**

ad_data.info()
<class 'pandas.core.frame.DataFrame'>
RangeIndex: 1000 entries, 0 to 999
Data columns (total 10 columns):
 #   Column                    Non-Null Count  Dtype  
---  ------                    --------------  -----  
 0   Daily Time Spent on Site  1000 non-null   float64
 1   Age                       1000 non-null   int64  
 2   Area Income               1000 non-null   float64
 3   Daily Internet Usage      1000 non-null   float64
 4   Ad Topic Line             1000 non-null   object 
 5   City                      1000 non-null   object 
 6   Male                      1000 non-null   int64  
 7   Country                   1000 non-null   object 
 8   Timestamp                 1000 non-null   object 
 9   Clicked on Ad             1000 non-null   int64  
dtypes: float64(3), int64(3), object(4)
memory usage: 78.2+ KB
ad_data.describe()
Daily Time Spent on Site Age Area Income Daily Internet Usage Male Clicked on Ad
count 1000.000000 1000.000000 1000.000000 1000.000000 1000.000000 1000.00000
mean 65.000200 36.009000 55000.000080 180.000100 0.481000 0.50000
std 15.853615 8.785562 13414.634022 43.902339 0.499889 0.50025
min 32.600000 19.000000 13996.500000 104.780000 0.000000 0.00000
25% 51.360000 29.000000 47031.802500 138.830000 0.000000 0.00000
50% 68.215000 35.000000 57012.300000 183.130000 0.000000 0.50000
75% 78.547500 42.000000 65470.635000 218.792500 1.000000 1.00000
max 91.430000 61.000000 79484.800000 269.960000 1.000000 1.00000

Exploratory Data Analysis

Let’s use seaborn to explore the data!

Try recreating the plots shown below!

** Create a histogram of the Age**

sns.distplot(ad_data['Age'])

png

Create a jointplot showing Area Income versus Age.

sns.jointplot(ad_data['Age'], ad_data['Area Income'])

png

Create a jointplot showing the kde distributions of Daily Time spent on site vs. Age.

sns.jointplot(ad_data['Age'], ad_data['Daily Time Spent on Site'], kind='kde')

png

** Create a jointplot of ‘Daily Time Spent on Site’ vs. ‘Daily Internet Usage’**

sns.jointplot(ad_data['Daily Time Spent on Site'], ad_data['Daily Internet Usage'])

png

** Finally, create a pairplot with the hue defined by the ‘Clicked on Ad’ column feature.**

sns.pairplot(ad_data, hue='Clicked on Ad')

png

Logistic Regression

Now it’s time to do a train test split, and train our model!

You’ll have the freedom here to choose columns that you want to train on!

** Split the data into training set and testing set using train_test_split**

from sklearn.model_selection import train_test_split
x = ad_data[['Daily Time Spent on Site', 'Age', 'Area Income','Daily Internet Usage', 'Male']]
y = ad_data['Clicked on Ad']
x_train, x_test, y_train, y_test = train_test_split(x, y, test_size=0.2, random_state=17)

** Train and fit a logistic regression model on the training set.**

from sklearn.linear_model import LogisticRegression
LR = LogisticRegression()
LR.fit(x_train, y_train)
LogisticRegression()

Predictions and Evaluations

** Now predict values for the testing data.**

prediction = LR.predict(x_test)

** Create a classification report for the model.**

from sklearn.metrics import classification_report
             precision    recall  f1-score   support

          0       0.87      0.96      0.91       162
          1       0.96      0.86      0.91       168

avg / total       0.91      0.91      0.91       330

Great Job!

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