Which of the following does NOT increase statistical power?
A) decreasing alpha
B) using a one-tailed hypothesis
C) increasing sample size
D) exaggerating differences between levels of the independent variable

Question

Quizplus · Accepted Answer

Decreasing alpha (the significance level) actually reduces statistical power. Statistical power is the probability of correctly rejecting the null hypothesis when it is false. Lowering alpha makes the criteria for rejecting the null hypothesis more stringent, thus potentially reducing the chance of detecting a true effect.

Which of the Following Does NOT Increase Statistical Power