Deciding whether two populations have the same distribution uses the test for:

1. The three chi-square tests answer three different questions. 2. A different test, called the test for homogeneity, can be used. 3. It draws a conclusion about whether two populations have the same distribution. 4. The test of independence instead looks at two variables within one population. _Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 11 'The Chi-Square Distribution', sections 11.1-11.5_