Refers to the similarity or equality between multiple groups or populations. In statistics, it specifically refers to whether multiple categorical variables have similar distributions.
Related terms
Independence: When events or variables are not influenced by one another. Independence is often assumed when testing for homogeneity using a chi-squared test.
Contingency table: A table that summarizes categorical data from two or more groups, showing their joint frequencies.
Expected frequency: The count or proportion that would be expected under the assumption of independence.