When analyzing a multilevel design, multiple t tests
A)are OK, providing you complete no more than five of them
B)increase the probability of making a Type II error
C)increase the probability of making a Type I error
D)should be completed first, then an ANOVA to verify the results

Question

Quizplus · Accepted Answer

Conducting multiple t-tests increases the probability of making a Type I error, which is the incorrect rejection of a true null hypothesis, due to the accumulation of alpha levels across tests.

When Analyzing a Multilevel Design, Multiple T Tests