A power analysis reveals that the study being run has low power.Which method is NOT an appropriate way to increase statistical power?
A) Increase the alpha.
B) Increase the variance of the distributions.
C) Increase the N.
D) Decrease the standard deviation.

Question

Quizplus · Accepted Answer

Increasing the variance of the distributions would actually decrease statistical power, as it makes it harder to detect a true effect due to increased variability in the data. Increasing the sample size (N), decreasing the standard deviation, or increasing the alpha level are methods that can increase statistical power.

A Power Analysis Reveals That the Study Being Run Has