If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Unit: Inference for categorical data (chi-square tests)

0

Possible mastery points

Chi-square goodness-of-fit tests

Learn

Practice

Chi-square tests for relationships

Learn

Practice

Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 700 Mastery points!

About this unit

Chi-square tests are a family of significance tests that give us ways to test hypotheses about distributions of categorical data. This topic covers goodness-of-fit tests to see if sample data fits a hypothesized distribution, and tests for independence between two categorical variables.