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Statistical Application Development with R and Python

You're reading from   Statistical Application Development with R and Python Develop applications using data processing, statistical models, and CART

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Product type Paperback
Published in Aug 2017
Publisher
ISBN-13 9781788621199
Length 432 pages
Edition 2nd Edition
Languages
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Author (1):
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Prabhanjan Narayanachar Tattar Prabhanjan Narayanachar Tattar
Author Profile Icon Prabhanjan Narayanachar Tattar
Prabhanjan Narayanachar Tattar
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Table of Contents (12) Chapters Close

Preface 1. Data Characteristics FREE CHAPTER 2. Import/Export Data 3. Data Visualization 4. Exploratory Analysis 5. Statistical Inference 6. Linear Regression Analysis 7. Logistic Regression Model 8. Regression Models with Regularization 9. Classification and Regression Trees 10. CART and Beyond Index

Visualization techniques for categorical data


In Chapter 1, Data Characteristics, we came across many variables whose outcomes are categorical in nature. Gender, Car_Model, Minor_Problems, Major_Problems, and Satisfaction_Rating are examples of categorical data. In a software product development cycle, various issues or bugs are raised at different severity levels such as Minor and Show Stopper. Visualization methods for the categorical data require special attention and techniques, and the goal of this section is to aid the reader with some useful graphical tools.

In this section, we will mainly focus on the dataset related to bugs, which are of primary concern for any software engineer. The source of the datasets is http://bug.inf.usi.ch/ and the reader is advised to check the website before proceeding further in this section. We will begin with the software system Eclipse JDT Core, and the details for this system may be found at http://www.eclipse.org/jdt/core/index.php. The files for...

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