I'm trying to calculate the sample size for a 2x2 Mixed ANOVA using G*Power 188.8.131.52 I have entered the following values in F tests ANOVA: repeated measures, between factors - A priori: Effect size = 0.5, alpha error = 0.05, Power = 0.95, No. of groups = 2, No. of measurements = 2, Corr = 0.5
The total sample size was 42. However, I'm conducting an experiment where participants will do two different IVs and two Mixed ANOVAs analysis will be done. e.g. between IV1 (with 2 levels) and within IV1 and between IV2 (with 2 levels) and within IV1
Hence, should my total sample size be 84?
Any help would be much appreciated Thanks