I have to say that you should look into the SVD function (part of the IML package). It is a dimension-reducing function; in short, it groups variables in to mutually-exclusive sets. I found it extremely helpful for grouping 95 healthcare software application sections of hospitals in to mutually exclusive groups.
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.