SAS Certification Prep Guide

Chapter 5: Analysis of Categorical Variables

Introduction. 127

Testing the Independence of Two Categorical Variables. 127

Hypothesis Testing and the Chi-Square Test 128

The Chi-Square Test Using the FREQ Procedure. 136

Measuring the Strength of Association between Two Categorical Variables. 140

Cramer’s V.. 140

The Odds Ratio. 149

Using Chi-Square Tests for Exploration Prior to Predictive Analytics. 152

Key Terms. 158

Chapter Quiz. 2

Introduction

Every day we come across statements of association: students living on campus are more likely to graduate from college, obesity is associated with sleep apnea, females are more likely to wear seat belts, employees who telecommute are more likely to be loyal to their employers, to name a few. Specifically, ...