The only factor that a researcher cannot manipulate in order to increase statistical power is
A) effect size.
B) sample size.
C) the p value for rejecting the null hypothesis.
D) the specification of directionality in the research hypothesis.

Question

Quizplus · Accepted Answer

Effect size is determined by the phenomena being studied and is not something a researcher can manipulate. Increasing sample size, adjusting the p-value threshold, and specifying directionality in hypotheses are all within a researcher's control to potentially increase statistical power.

The Only Factor That a Researcher Cannot Manipulate in Order