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.
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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.