RE: st: Marginal effects of interactions in Tobit

["David Radwin" <dradwin@mprinc.com>]

I am sorry about the blank post just now. This question has been asked and
answered before. Please see:

http://www.stata.com/statalist/archive/2008-02/msg01138.html

You may also have luck with -clarify- by Gary King, Michael Tomz, and
Jason Wittenberg, described at http://j.mp/k3k0rx .

David
--
David Radwin
Senior Research Associate
MPR Associates, Inc.
2150 Shattuck Ave., Suite 800
Berkeley, CA 94704
Phone: 510-849-4942
Fax: 510-849-0794

www.mprinc.com


> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-
> statalist@hsphsun2.harvard.edu] On Behalf Of William Buchanan
> Sent: Tuesday, December 25, 2012 9:38 AM
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: st: Marginal effects of interactions in Tobit
> 
> Hi Ebru,
> 
> As mentioned explicitly in the Statalist FAQ, if you are using any
version
> of Stata other than the most current version you are asked to explicitly
> state this. If everyone is working under the assumption that you are
using
> Stata 12.1 (the current version of Stata), they will provide you with
> advice accordingly. When you don't state this up front, you get less
> valuable feedback and cause respondents to use their time to provide you
> with an answer to a different question from what you have.
> 
> HTH,
> Billy
> 
> Sent from my iPhone
> 
> On Dec 25, 2012, at 10:00, Ebru Ozturk <ebru_0512@hotmail.com> wrote:
> 
> > Thank you for your response. But I need it for Stata 10.
> >
> > Kind regards
> > Ebru
> >
> > ----------------------------------------
> >> From: kit.baum@bc.edu
> >> To: statalist@hsphsun2.harvard.edu
> >> Subject: re: st: Marginal effects of interactions in Tobit
> >> Date: Mon, 24 Dec 2012 17:08:01 +0000
> >>
> >> <>
> >> Ebru said
> >>
> >> I wanted to obtain marginal effects of interaction terms in Tobit
> regression. Altough there are some examples given by Stata FAQ page
> http://www.stata.com/support/faqs/statistics/marginal-effects-after-
> interactions/ there is no example for Tobit estimation. I am
particularly
> interested in marginal effects of quadratic term in Tobit? Can you
explain
> how to do it for Tobit?
> >>
> >> sysuse auto,clear
> >> generate wgt=weight/1000
> >> tobit mpg c.wgt##c.wgt, ll(17)
> >> margins, dydx(wgt)
> >> margins, dydx(wgt) at(wgt=(1.75(0.5)4.75)) vsquish
> >> marginsplot
> >>
> >> Kit
> >>
> >>
> >> Kit Baum | Boston College Economics & DIW Berlin |
> http://ideas.repec.org/e/pba1.html
> >> An Introduction to Stata Programming | http://www.stata-
> press.com/books/isp.html
> >> An Introduction to Modern Econometrics Using Stata |
http://www.stata-
> press.com/books/imeus.html
> >>
> >>
> >> *
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