A statistical power analysis tells us:
A)How large our effect size is.
B) The probability of avoiding a Type II error assuming our hypothesis is true.
C) The probability of committing a Type I error.
D) How much substantive significance our findings have.

Question

Quizplus · Accepted Answer

A statistical power analysis calculates the probability of avoiding a Type II error (false negative) assuming our hypothesis is true. It helps us determine the sample size needed to detect a certain effect size with a certain level of confidence.

A Statistical Power Analysis Tells Us