Book Image

Statistical Application Development with R and Python - Second Edition

Book Image

Statistical Application Development with R and Python - Second Edition

Overview of this book

Statistical Analysis involves collecting and examining data to describe the nature of data that needs to be analyzed. It helps you explore the relation of data and build models to make better decisions. This book explores statistical concepts along with R and Python, which are well integrated from the word go. Almost every concept has an R code going with it which exemplifies the strength of R and applications. The R code and programs have been further strengthened with equivalent Python programs. Thus, you will first understand the data characteristics, descriptive statistics and the exploratory attitude, which will give you firm footing of data analysis. Statistical inference will complete the technical footing of statistical methods. Regression, linear, logistic modeling, and CART, builds the essential toolkit. This will help you complete complex problems in the real world. You will begin with a brief understanding of the nature of data and end with modern and advanced statistical models like CART. Every step is taken with DATA and R code, and further enhanced by Python. The data analysis journey begins with exploratory analysis, which is more than simple, descriptive, data summaries. You will then apply linear regression modeling, and end with logistic regression, CART, and spatial statistics. By the end of this book you will be able to apply your statistical learning in major domains at work or in your projects.
Table of Contents (19 chapters)
Statistical Application Development with R and Python - Second Edition
Credits
About the Author
Acknowledgment
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
Index

Packages and settings – R and Python


For R, we need pscl and ROCR packages. The path settings are dealt with to kick-off the chapter:

  1. First set the working directory:

    setwd("MyPath/R/Chapter_07")
  2. Load the required R packages:

    library(RSADBE)
    library(pscl)
    library(ROCR)
  3. We have the published Python notebook file Chapter_10_CART_and_Beyond.ipynb in the output folder:

We are now set to begin the proceedings.

The binary regression problem

Consider the problem of modeling the completion of a stat course by students based on their Scholastic Assessment Test in the subject of mathematics SAT-M scores at the time of their admission. After the completion of the final exams we know which students successfully completed the course and which of them failed. Here, the output pass/fail may be represented by a binary number 1/0. It may be fairly said that the higher the SAT-M scores at the time of admission to the course, the more likelihood of the candidate completing the course. This problem has been discussed...