To estimate power, a researcher will need to know:
A) Size of the sample
B) The significance level (α)
C) The estimated effect size of the relationship
D) All of the above

Question

Quizplus · Accepted Answer

All three factors (size of the sample, significance level, and estimated effect size of the relationship) contribute to the calculation of power. Knowing any one or two of these factors is not enough to estimate power accurately, so the researcher needs to know all three.

To Estimate Power, a Researcher Will Need to Know