The power of an analysis of variance can be increased by all of the following EXCEPT
A)having more participants in each group.
B)using more groups in an experiment.
C)using the .01 significance level instead of the .05 significance level.
D)having equal numbers of participants in the groups.

Question

Quizplus · Accepted Answer

Using a more stringent significance level (such as .01 instead of .05) decreases the likelihood of Type I error and increases the power of the analysis. A, B, and D increase power as well by reducing error variance and increasing the size of the effects being measured.

The Power of an Analysis of Variance Can Be Increased