A chi-square test is a hypothesis test that compares the observed distribution of your data to an expected distribution of data.

There are several types of chi-square tests:

- Chi-square goodness-of-fit test
- Use this analysis to test how well a sample of categorical data fits a theoretical distribution.
- Chi-square tests of association and independence
- The calculations for these tests are the same, but the question you're trying to answer may be different.

Minitab does not use Yates' correction factor when it performs a chi-square test.