If there is evidence of sphericity in a repeated-measures design the outcome could be that?
A) The p-value will be too high.
B) The p-value will be too low.
C) A p-value cannot be computed.
D) The p-value will not be related to the model.

Question

Quizplus · Accepted Answer

Evidence of sphericity in a repeated-measures design means that the assumption of homogeneity of variances for the within-subjects factors may not hold, leading to an overestimation of the significance of the F-statistic and a lower p-value. Therefore, the correct answer is B.

If There Is Evidence of Sphericity in a Repeated-Measures Design