A researcher may not be able to change the effect size of a planned study to increase power. Another aspect of a planned study that the researcher can usually change to increase power is:
A)the sample size
B)the beta level
C)the population parameters
D)the sample mean

Question

Quizplus · Accepted Answer

The sample size is one aspect of a planned study that the researcher can usually change to increase power. Increasing the sample size can increase the likelihood of detecting a statistically significant difference between groups or conditions, thereby increasing power. The other options (B, C, and D) are not aspects that a researcher can typically change in a planned study to increase power.

A Researcher May Not Be Able to Change the Effect