When an ANOVA is significant,
A)a multiple comparison test must be performed
B)an a posteriori test must be performed
C)a post hoc test must be performed
D)all of the above

Question

Quizplus · Accepted Answer

When an ANOVA indicates a significant difference, it means that at least one group mean is different from the others, but it doesn't specify which ones. To identify the specific groups that differ, a post hoc test (also known as a multiple comparison test or an a posteriori test) is necessary. Thus, all the options are essentially referring to the same subsequent analysis process, making all of them correct.

When an ANOVA Is Significant