Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, is already up and running.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: RE: comparing different means using ttest

From   Nick Cox <>
To   "''" <>
Subject   st: RE: comparing different means using ttest
Date   Thu, 16 Dec 2010 18:02:16 +0000

Maarten pointed out two misconceptions here. I think there are several others. 

If you are using -regress- as here then with standard procedures the mean residual is automatically zero. In any case the mean residual tells you nothing whatsoever about homo- or heteroscedasticity, any more than the mean of anything tells you about its variability. 

© Copyright 1996–2015 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index