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st: margins, eyex


From   albert Lee <ajlee20005@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: margins, eyex
Date   Sun, 23 Sep 2012 14:59:23 -0400

Hi, I ran a simple OLS and invoked the margins, eyex(*) to calculate
the elasticities.  I try to replicate the elasticity estimates by
running the sample regression with logged dependent variable, and
independent variables.  I was surprised that the coefficient estimates
from the logged regression are not identical with the margins
estimates.  Initially, I thought the discrepancies are due to atmeans
and asobserved options with margins.  But I tried both options and
still cannot replicate elasticity estimates by the logged regression.
Could someone explain?

Thanks,

Albert.
-- 
Albert J. Lee, Ph.D.,
Economist

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