Chi-Square Tests for Homogeneity and Independence

Question

What is the primary difference between a chi-square test for homogeneity and a chi-square test for independence?

Accepted Answer

A test for homogeneity involves comparing independent samples from different populations, whereas a test for independence uses one sample categorized by two variables

Answer

There is no difference; the tests are identical in procedure and interpretation

Answer

A test for homogeneity assumes normality, while a test for independence does not

Answer

A test for independence requires expected frequencies below 5, unlike a test for homogeneity