18 March 2021 3 6K Report

Hi everyone, I'm preparing for an experiment and need to calculate the minimum sample size. Participants (level-2) are randomly assigned to one of the two conditions (level-1), and they will be measured with the same scales at two timepoints (level-3). Based on previous research, I decided that the effect size of condition on the outcomes is f=0.2.

Based on this design, how should I calculate the sample size I need?

More Linwei He's questions See All
Similar questions and discussions