If you have a multigroup design with seven groups, what is the minimum number of participants you should have for reasonable power in your study?
A) 50
B) 150
C) 210
D) 600

Question

Quizplus · Accepted Answer

The minimum number of participants required in a multigroup design depends on several factors such as the effect size, variability, and alpha level. However, as a general rule of thumb, a total sample size of at least 200 participants (with at least 20 participants per group) is often recommended for a multigroup design to ensure reasonable statistical power. Therefore, in a seven-group design, the minimum recommended sample size would be 210 participants (30 per group).

If You Have a Multigroup Design with Seven Groups, What