Testing for a difference in variance in a variable when there is a random effect
Using "Fit Model" I'm predicting my dependent variable using a dichotomous nominal variable "Type" as well as a variable "Sample," which is a random effect (in JMP language that is; some would prefer to call "Sample" a random variable). This tests whether the two "Types" differ on my DV, again taking into account that "Sample" is a random effect. Interestingly, the sample means for one "Type" are...