From | Chris Ruebeck <ruebeckc@lafayette.edu> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: RE: Econometrics Theory Questions on Dummies and Correlation Analysis |
Date | Mon, 18 Apr 2005 22:43:25 -0400 |
I agree that means and variances of non-binary nominal codes don't usually make sense. The only exception I can think of is that zero variance has a clearcut interpretation, namely that all observations are in the same category. But you clearly don't need the variance to tell you that, and I don't think this is a point at issue in this thread.
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