Thanks a lot for the quality responses. I'll keep these in mind in the future.
-Radu
2006/2/27, Scott Merryman <smerryman@kc.rr.com>:
> You replicate this with the grunfeld dataset and the mvalue variable.
>
> sysuse grunfeld,clear
> egen double t1 = total(mva), by(com)
> egen double t2 = total(kstock), by(com)
>
> //t1 not dropped
> areg invest kstock t1, ab(com)
>
> //t2 dropped
> areg invest mvalu t2, ab(com)
>
> replace t1 = t1/100
> //Now, t1 is dropped
> areg invest kstock t1, ab(com)
>
> replace t2 = t2*10000
> //Now, t2 is not dropped
> areg invest mvalu t2, ab(com)
>
>
> Scott
>
> > -----Original Message-----
> > From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-
> > statalist@hsphsun2.harvard.edu] On Behalf Of Schaffer, Mark E
> > Sent: Monday, February 27, 2006 4:53 PM
> > To: statalist@hsphsun2.harvard.edu
> > Subject: RE: st: behavior of -areg-
> >
> > Maybe try egening your total_hh_nr variable as a double? If areg uses
> > doubles and you generate a float, it might not be perfectly collinear.
> >
> > --Mark
> >
>
>
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