Sphericity test not performed due to insufficient error degrees of freedom
Hi,I have Heart rates from 3 different groups collected at 7 times differents points. I would like to perform a repeated measures ANOVA. To do so, I would like to check sphericity assumption. I found online that you have to split your data and then Analyze > fit model, I add my 7 times in "Y" then Group in "Construct model effects", then Personality "Manova", Run. I checked “Univariate Tests Also”...