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RE:st: manual F-test

From   Maarten buis <>
To   stata list <>
Subject   RE:st: manual F-test
Date   Tue, 20 Apr 2010 16:21:01 +0000 (GMT)

-- Nola wrote:
> I recently conducted a manual F-test to determine whether I could  
> pool both large and small market data.  
> 1.  I now need to conduct a similar test using -regress- (instead of  
> xtpcse). Since Stata does not collect e(n_cf) in -regress- is there a  
> way for me to re-write the code to still perform this manual test  
> after using -regress-?

Look inside the code (-viewsource ftest-) of -ftest- to see an example.
You can download -ftest- by typing in Stata -ssc install ftest-. 

> 2.  Is there a built in command I don't know about that would make  
> this all a lot easier?

Yes, see -help test-.

Hope this helps,

Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen


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