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st: compute elasticity: Probit VS LPM


From   "Feng Liu" <fliu22@gmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: compute elasticity: Probit VS LPM
Date   Tue, 18 Apr 2006 10:13:11 -0400

Hi,

I run a simple model: y = x1 + x2. Both y and x1 are dummy variables and
they are highly positively correlated. x2 is a continuous variable. I use
command mfx, eyex to estimate the elasticity of x2. I tried both Probit and
OLS. However, the elasticities from them are much different. The one from
Probit is -1.27 and the one from OLS is -0.27. I wonder what might be the
problem.

Thanks in advance for your help.

Feng


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