Multivariate and Univariate Measures for Testing Homoscedasticity Across Groups: Example X5 moderated by X3
I am trying to figure out how JMP can provide Multivariate tests for homoscedasticity, and univariate tests for homoscedasticity. So i have moderation of distribution x5 by a firm size x3 and my dependent variables are X19, X20, X21. JMP does not provide for Box's m test but i can use Barlett. However, using to use both X5 and X3 ni the fit group cannot be done to get to these values for univariat...