Which procedure would reduce the power of a statistical test?
A) Using a one-tailed test instead of a two-tailed test
B) Reducing the variability of the scores
C) Changing the alpha level from .10 to .05
D) Decreasing the sample size

Question

Quizplus · Accepted Answer

Decreasing the sample size would reduce the power of a statistical test by decreasing the likelihood of detecting a true effect.

Which Procedure Would Reduce the Power of a Statistical Test