<>
sysuse auto,clear
reg price mpg weight turn
estimates store estimate1
reg price mpg headroom trunk
estimates store estimate2
*after some time
estimates restore estimate1
scalar rss1 = e(rss)
estimates restore estimate2
scalar rssd = e(rss) - rss1
di "difference in error SS: " rssd
HTH
Martin
-------- Original-Nachricht --------
> Datum: Sun, 15 Mar 2009 15:10:23 +0100
> Von: Dragutin Culinovic <[email protected]>
> An: STATALIST <[email protected]>
> Betreff: Re: st: re: math operations with estimation results from two different estimates
> Yes, but what if I have results from estimates stored in eg. estimate1
> and estimate2.
>
> THX
>
> On Sun, Mar 15, 2009 at 1:28 PM, Kit Baum <[email protected]> wrote:
> > <>
> > Dragutin said
> >
> > I would like to subtract value of SSR from estimate stored in e1, from
> > that stored in e2.
> >
> > "SSR" is ambiguous in that some textbooks define it as SS due to
> Regression
> > (model SS) and some define it as SS Residuals (error SS). Let's assume
> he
> > means the latter.
> >
> > sysuse auto,clear
> > reg price mpg weight turn
> > scalar rss1 = e(rss)
> > reg price mpg headroom trunk
> > scalar rssd = e(rss) - rss1
> > di "difference in error SS: " rssd
> >
> > Kit Baum | Boston College Economics and DIW Berlin |
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
--
Martin Weiss
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