Post hoc tests are used to A)determine whether an F-ratio is significant. B)determine whether $ \eta $² needs to be computed. C)make all pairwise comparisons between group means. D)all of the options are correct.

Question

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Post hoc tests are used to make all pairwise comparisons between group means after a significant F-ratio has been obtained in an ANOVA. This helps to identify which specific groups differ from each other, as the omnibus F-test only determines whether there is a significant difference between groups as a whole.

Post Hoc Tests Are Used to A)determine Whether an F-Ratio η \eta η

Post Hoc Tests Are Used to
A)determine Whether an F-Ratio $\eta$