I have Group A, B, C. My hypotheses are"
1) proportions of C are different from proportions of A (=independance)
2) proportions of C are different from proportions of B (=independance)
3) proportions of A are NOT different from proportions of B (=NO independance)
Is there something like post-hoc contrasts for chi-squared, so I can test all my hypotheses in ONE modell and not have alpha inflation?
Intuitively I would test C against a composite of A and B but that still doesnt test if A is different/independent
There is a post on Stackoverflow regarding this topic, but there wasn't an answer.