o.k.
the exact command is:
xtivreg2 wage bild aerfahrung d_ajahr1- d_ajahr23 [aweight=weight],fe
i(region) t(ajahr) robust cluster (region)
wage: average wage per region
number of regions:72
number of observations:1900
error message:number of clusters must be greater than number of instruments
Best,
Max
--- Urspr�ngliche Nachricht ---
> Von: "Schaffer, Mark E" <[email protected]>
> An: <[email protected]>
> Betreff: st: RE: RE: Xtivreg2 (formerly: Two way Fixed Effects &
> Autocorrelation& Heteroskedasticity)
> Datum: Mon, 3 Apr 2006 12:21:35 +0100
>
> Indeed ... detective work can be fun, but not always. :)
>
> Send the exact command you used and I'll see if I can work out what
> happened from that.
>
> --Mark
>
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of Nick Cox
> > Sent: 03 April 2006 12:00
> > To: [email protected]
> > Subject: st: RE: Xtivreg2 (formerly: Two way Fixed Effects &
> > Autocorrelation& Heteroskedasticity)
> >
> > Please edit emails. I removed several previous emails from
> > this, the whole thread it seems.
> >
> > Please show the experts
> >
> > !!! exactly what you typed !!!
> >
> > Nick
> > [email protected]
> >
> > [email protected]
> >
> > > >Thank you again,Mark.
> > > I used xtrivreg2 and omitted (varlist2=varlist_iv) to
> > estimate simple
> > > fixed effect.I clustered on regions.Unfortunately I
> > received the error
> > > message:
> > > number of clusters must be greater than number of
> > instruments.(using
> > > Stata
> > > 8.2.)
> > > Any suggestions whats wrong ?
> >
> > *
> > * For searches and help try:
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> > * http://www.ats.ucla.edu/stat/stata/
> >
> >
>
> *
> * For searches and help try:
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>
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