When using the Scheffe' post hoc test for a repeated-measures ANOVA,the denominator for the F ratio should be ____.
A)MS error
B)MS between subjects
C)MS within
D)MS between treatment

Question

When using the Scheffe' post hoc test for a repeated-measures ANOVA,the denominator for the F ratio should be ____.​
A)​MS error
B)​MS between subjects
C)​MS within
D)​MS between treatment

Quizplus · Accepted Answer

The Scheffe' post hoc test for a repeated-measures ANOVA uses the mean square error (MS error) as the denominator for the F ratio. This is because the MS error reflects the variability within the groups, which is what you want to control for when comparing group means in a post hoc analysis.

When Using the Scheffe' Post Hoc Test for a Repeated-Measures