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Re: st: dprobit coefficients greater than 1


From   Radu Ban <raduban@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: dprobit coefficients greater than 1
Date   Thu, 6 Oct 2005 17:51:35 -0400

Dear May,

Thanks a lor for your reply. I understand the point for the case of
continuous variables. But does this still apply for dummy variables?
In my situation I have the marginal effect for dummy variables being
greater than 1.

Thanks again,
Radu

On 10/6/05, May Boggess <mboggess@stata.com> wrote:
> On Thursday afternoon Radu  wrote:
>
> > I'm interested in the marginal effects so I'm using
> > the -dprobit- command. And I'm puzzled because the coefficients on
> > some of my explanatory dummy variables are greater than 1. I thought
> > that the coefficients represent the change in probability associated
> > with moving from dummy = 0 to dummy = 1, so they couldn't possibly be
> > greater than 1.
>
> A marginal effect for a continuous variable is a slope and so can
> be greater than 1. Here is an FAQ on the topic that explains
> the issue in detail:
>
>  http://www.stata.com/support/faqs/stat/mfx_size.html
>
> -- May
>
> mmb@stata.com
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