The primary factor that researchers use to control the power of a statistical test is
A) the size of the treatment effect.
B) the level of significance.
C) the sample size.
D) choosing a more heterogeneous population.

Question

Quizplus · Accepted Answer

The sample size is the primary factor that researchers use to control the power of a statistical test. Increasing the sample size leads to a greater power of the test, which means it is more likely to detect a true difference if one exists. The other factors listed may also impact the power of a test, but they are not the primary factor.

The Primary Factor That Researchers Use to Control the Power