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st: Tobit marginal effects with binary variable


From   Brian Sartene <brian_sartene@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Tobit marginal effects with binary variable
Date   Fri, 17 Nov 2006 08:30:02 -0800 (PST)

Dear all:
I am trying to calculate the marginal effects from a tobit model for a binary variable (at the mean), specifically to calculate the three types of effects - conditional on being uncensored, unconditional expected value and probability uncensored. I assumed the unconditional expected value would equal the coefficient in the original model but this is not the case. Could anyone explain to me what the difference is?
Thanks very much in advance.
Best regards,
Brian



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