does anyone know a way to model standard deviation as a dependent variable?
I have a number of samples and I explained the mean differences of my dependent variable. It's quite easy given the multilevel regression.
Now I would like to explain differences in variance (or SD of mean). For example, there is a high variance of GPA in larger schools and a small variance of GPA in smaller schools. How to model it with or without multilevel approach given I have a school size variable as an independent and GPA as a dependent variable?
Any advice is welcome!