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Exploratory Data Analysis with Python Cookbook

Exploratory Data Analysis with Python Cookbook

By : Ayodele Oluleye
4.8 (5)
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Exploratory Data Analysis with Python Cookbook

Exploratory Data Analysis with Python Cookbook

4.8 (5)
By: Ayodele Oluleye

Overview of this book

In today's data-centric world, the ability to extract meaningful insights from vast amounts of data has become a valuable skill across industries. Exploratory Data Analysis (EDA) lies at the heart of this process, enabling us to comprehend, visualize, and derive valuable insights from various forms of data. This book is a comprehensive guide to Exploratory Data Analysis using the Python programming language. It provides practical steps needed to effectively explore, analyze, and visualize structured and unstructured data. It offers hands-on guidance and code for concepts such as generating summary statistics, analyzing single and multiple variables, visualizing data, analyzing text data, handling outliers, handling missing values and automating the EDA process. It is suited for data scientists, data analysts, researchers or curious learners looking to gain essential knowledge and practical steps for analyzing vast amounts of data to uncover insights. Python is an open-source general purpose programming language which is used widely for data science and data analysis given its simplicity and versatility. It offers several libraries which can be used to clean, analyze, and visualize data. In this book, we will explore popular Python libraries such as Pandas, Matplotlib, and Seaborn and provide workable code for analyzing data in Python using these libraries. By the end of this book, you will have gained comprehensive knowledge about EDA and mastered the powerful set of EDA techniques and tools required for analyzing both structured and unstructured data to derive valuable insights.
Table of Contents (13 chapters)
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Performing univariate analysis using a boxplot

Just like the histogram, the boxplot (also known as the whisker plot) is a good candidate for visualizing a single continuous variable within our dataset. Boxplots give us a sense of the underlying distribution of our dataset through five key metrics. The metrics include the minimum, first quartile, median, third quartile, and maximum values.

Figure 4.3: Boxplot illustration

Figure 4.3: Boxplot illustration

In the preceding figure, we can see the following components of a boxplot:

  • The box: This represents the interquartile range (25th percentile/1st quartile to the 75th percentile/3rd quartile). The median is the line within the box and it is also referred to as the 50th percentile.
  • The whisker limits: The upper and lower whisker limits represent the range of values in our dataset which are not outliers. The position of the whiskers is calculated from the interquartile range (IQR), 1st quartile, and 3rd quartile. This is represented...
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