Book Image

R Statistics Cookbook

By : Francisco Juretig
2 (2)
Book Image

R Statistics Cookbook

2 (2)
By: Francisco Juretig

Overview of this book

R is a popular programming language for developing statistical software. This book will be a useful guide to solving common and not-so-common challenges in statistics. With this book, you'll be equipped to confidently perform essential statistical procedures across your organization with the help of cutting-edge statistical tools. You'll start by implementing data modeling, data analysis, and machine learning to solve real-world problems. You'll then understand how to work with nonparametric methods, mixed effects models, and hidden Markov models. This book contains recipes that will guide you in performing univariate and multivariate hypothesis tests, several regression techniques, and using robust techniques to minimize the impact of outliers in data.You'll also learn how to use the caret package for performing machine learning in R. Furthermore, this book will help you understand how to interpret charts and plots to get insights for better decision making. By the end of this book, you will be able to apply your skills to statistical computations using R 3.5. You will also become well-versed with a wide array of statistical techniques in R that are extensively used in the data science industry.
Table of Contents (12 chapters)

GLMs in JAGS

GLMs stand for Generalized Linear Models. It is a generalization of the linear model (that assumes normality) to other distributions of the so-called exponential family (the Gaussian one is also part of this family). This model formulation allows us to fit models using several responses for the dependent variable such as binary, categorical, count, and more. For example, logistic and Poisson regression are two models that are part of this family.

In this example, we will do Bayesian logistic regression (one type of GLM). This model is appropriate when modeling a categorical response that takes two possible values. Possible examples could be modeling whether a customer is going to buy a product or not, or a student is going to pass an exam.

Both STAN and JAGS can handle not only linear regression models, but a wide array of regression models. In this exercise, we will...