A pilot study examining weight bearing exercise and bone density detects an effect size of 0.8. You are planning the next study and know this means:
A) you will find a clinically significant effect
B) if you enroll a large sample you may be spending more than you need to
C) if you have a small sample you will overestimate the effect
D) if you have a small sample you will not have enough power to detect this effect size

Question

Quizplus · Accepted Answer

An effect size of 0.8 is considered large, meaning that a smaller sample size may be sufficient to detect the effect, and enrolling a large sample could lead to unnecessary expenditure.

A Pilot Study Examining Weight Bearing Exercise and Bone Density