To detect a significant difference between two groups when the effect size is small, what should the researcher do?
A) Conduct a pilot study.
B) Obtain a different sample.
C) Increase the sample size.
D) Perform additional analysis.

Question

Quizplus · Accepted Answer

Increasing the sample size makes it easier to detect a difference.
A pilot study will help iron out problems with the methodology, but would not change the effect size.
Obtaining a different sample would not change the effect size.
Additional analysis would not change the effect size.

To Detect a Significant Difference Between Two Groups When the Effect