The power of a statistical test refers to
A) the ability of the test to reject the null hypothesis when it is, in fact, false.
B) the probability of rejecting the null hypothesis when it is, in fact, true.
C) the usefulness of the test in a wide variety of experimental designs.
D) the test-retest reliability of a psychological test.

Question

Quizplus · Accepted Answer

The power of a statistical test is defined as the probability that the test will reject the null hypothesis when the null hypothesis is false, thus correctly identifying an effect or difference when it exists.

The Power of a Statistical Test Refers to