To increase power:
A) Alpha can be increased (i.e., set at .10 instead of .05)
B) A directional hypothesis can be tested
C) The error variance can be decreased
D) The number of participants can be increased
E) All of the above

Question

Quizplus · Accepted Answer

Increasing alpha (A) makes it easier to reject the null hypothesis, thus increasing power. Using a directional hypothesis (B) focuses the test, increasing power. Decreasing error variance (C) makes effects easier to detect, and increasing the number of participants (D) reduces the impact of random variation, both of which increase power.

To Increase Power