Chi-Square Test of Independence | Formula, Guide & Examples
multiple comparisons - Is it invalid to conduct post-hoc analysis on a contingency table when an initial chi-squared test shows no significant evidence against independence? - Cross Validated
Nominal vs. Nominal - Part 3b: Post-hoc test
yuzaR-Blog: R demo | Chi-Square Test | how to conduct, visualize & interpret | + pairwise post-hoc tests