Author Question: The test that can be used to assess whether the assumption of sphericity has been violated in a ... (Read 17 times)

cookcarl · **on:** Jul 8, 2018

The test that can be used to assess whether the assumption of sphericity has been violated in a RM-ANOVA is:

a. Box M
b. Greenhouse-Geisser
c. Huynh-Feldt
d. Mauchly

Question 2

A mixed design RM-ANOVA is needed when:

a. A group is compared over three or more points in time
b. Two or more groups are compared over time
c. Change scores over time have been computed for two or more groups
d. The GLM cannot be assumed to be appropriate