If using a within-groups design results in a larger F statistic, this also means:
A) there is less variability between groups.
B) it is easier to reject the null hypothesis with this design.
C) Type I errors are more likely.
D) power is decreased.

Question

Quizplus · Accepted Answer

A within-groups design often results in a larger F statistic because it controls for more sources of variability than a between-groups design, making it easier to detect a true effect if one exists, hence making it easier to reject the null hypothesis.

If Using a Within-Groups Design Results in a Larger F