The practical use of statistical power is that it informs researchers:
A) whether they will find significant results.
B) how many participants are needed to conduct a study with findings they can trust.
C) whether they will find important results.
D) what effect size they can expect to find in conducting their study.

Question

Quizplus · Accepted Answer

Statistical power is the probability of finding a statistically significant result. It is used to determine how many participants are needed in a study to ensure that the findings can be trusted. Therefore, option B is the best choice as it accurately represents the practical use of statistical power for researchers.

The Practical Use of Statistical Power Is That It Informs