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st: running regressions on only certain sections of the data


From   "T.J. Volant" <[email protected]>
To   [email protected]
Subject   st: running regressions on only certain sections of the data
Date   Mon, 19 Feb 2007 08:31:08 -0800 (PST)

Hello all,

I have a big data set and am trying to run regressions
on various combinations of sections. Is there a way to
do this w/out having to drop irrelevant observations
every time?
Example:
A y1 x1
A y2 x2
B y3 x3
B y4 x4
C y5 x5
C y6 x6

Running y on x only for the A section without having
to drop all B and C observations. Then regress y on x
for AC, for AB, etc.
Thank you in advance!

T.J.Volant




 
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