# Chapter 11: Chi-Square Procedures

**Overview**

Chapter 10 covers the [latex]z[/latex] test and [latex]z[/latex] interval for one and two proportions. Chi-square tests are used when at least two proportions are compared.

Learning Objectives

As a result of completing this chapter, you will be able to do the following:

- Explain the main idea behind chi-square tests.
- Describe the differences between the chi-square goodness-of-fit and chi-square independence (homogeneity) tests.
- Identify situations where the chi-square goodness-of-fit or the chi-square independence (homogeneity) test should be used.
- Perform a chi-square goodness-of-fit test and a chi-square independence test.