According to Cohen, for an experiment to be worth conducting, it should have a level of power of about:
A)1%
B)5%
C)80%
D)near 100% (about 98% or higher)

Question

Quizplus · Accepted Answer

Cohen suggests that an experiment should have a power of at least 80%, so choice C is the correct answer. Any lower power level would indicate that the experiment is not able to detect a significant effect even if one exists, which renders the results inconclusive or unreliable. On the other hand, a power level of near 100% is unrealistic and unnecessary, as it would require an extremely large sample size and heightened control, which are not always practical or feasible in research. Therefore, the best choice is C.

According to Cohen, for an Experiment to Be Worth Conducting