Learning objectives aid revision by reminding you of the concepts you will have mastered in each chapter.

In this chapter you will discover:

• How to test the relationship between two categorical variables using:

• he chi-square test
   
• Fisher’s exact test
   
• The likelihood ratio test
   
• The chi-square distribution
   
• Standardized residuals
   
• Bayes factors
   
• Correlation analysis
   
• Spearman’s rho and Kendall’s tau
   
• Covariance
   
• Bayesian approaches