9) Which of the following will not increase power:
A) Increasing sample size
B) Increasing the effect size
C) Decreasing the population variance
D) Increasing the standard deviation of the population

Question

Quizplus · Accepted Answer

Increasing the standard deviation of the population will decrease power as it increases the variability in the population, making it harder to detect a significant effect. A, B, and C will all increase power as they increase the signal-to-noise ratio of the data.

9) Which of the Following Will Not Increase Power