Which of the following is true about statistical power?
A) The greater the power, the more likely one can detect a true difference between groups
B) Power is the probability of rejecting a false null hypothesis
C) Power is the same as alpha, or the probability of a Type I error
D) The greater the power, the more generalizable the results
E) a and b

Question

Quizplus · Accepted Answer

Statistical power is indeed the probability of correctly rejecting a false null hypothesis (B), which means it's the likelihood of detecting a true effect or difference when it exists (A). Power is not the same as alpha (C), which is the probability of a Type I error, nor does it directly influence the generalizability of results (D).

Which of the Following Is True About Statistical Power