What are post hoc tests?
A)They are tests, which conduct stepwise contrasts, contrasting all the different combination of groups within an ANOVA, through a comparison of each standard deviation against all the others.
B)They are tests, which conduct pairwise contrasts, examining all the different combination of groups within an ANOVA, through a comparison of each group's effect size against all the others.
C)They are tests, which conduct pairwise comparisons, contrasting all the different combination of groups within an ANOVA, through a comparison of each standard error against all the others.
D)They are tests, which conduct pairwise comparisons, comparing all the different combinations of groups within an ANOVA, through a comparison of each mean against all the others.

Question

Quizplus · Accepted Answer

Post hoc tests are pairwise comparisons conducted after an ANOVA to determine which specific groups differ significantly from each other. They compare all the different combinations of groups using a comparison of each mean against all the others. Therefore, option D is the correct answer. Option A talks about stepwise contrasts, which do not necessarily involve pairwise comparisons. Option B uses the term "effect size" which is not typically used in post hoc tests. Option C mentions "standard error," which is not typically used in post hoc tests either.

What Are Post Hoc Tests