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AW: st: AW: implementation of variance formula


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   AW: st: AW: implementation of variance formula
Date   Tue, 10 Mar 2009 17:57:15 +0100

<> 


Cheers, but you may want to adress this to Inna. I simply replied to her
general query for an implementation of a variance formula in Mata...



HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Robert A Yaffee
Gesendet: Dienstag, 10. März 2009 17:55
An: statalist@hsphsun2.harvard.edu
Betreff: Re: st: AW: implementation of variance formula

Martin,
   That Horvitz-Thompson estimator is used when the sample design includes
sampling without replacement as opposed to sampling with
replacement.
    Regards,
    Bob


Robert A. Yaffee, Ph.D.
Research Professor
Silver School of Social Work
New York University


Biosketch: http://homepages.nyu.edu/~ray1/Biosketch2008.pdf

CV:  http://homepages.nyu.edu/~ray1/vita.pdf

----- Original Message -----
From: Martin Weiss <martin.weiss1@gmx.de>
Date: Tuesday, March 10, 2009 8:32 am
Subject: st: AW: implementation of variance formula
To: statalist@hsphsun2.harvard.edu


> <> 
> The most prominent one is probably the one of the OLS estimator "V =
> s^2*(X'X)^(-1)" which you can see in Mata action in 
> 
> *************
> help m1_interactive
> *************
> 
> 
> 
> HTH
> Martin
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Inna Becher
> Gesendet: Dienstag, 10. März 2009 12:07
> An: statalist@hsphsun2.harvard.edu
> Betreff: st: implementation of variance formula
> 
> Dear statalisters,
> 
> I have to implement a formula of the variance of modified 
> horvitz-thompson-estimator. 
> My dataset is very large, so I cannot produce a lot of new variables in
> order to do that. 
> Should I use mata? Are there any examples of implementing variance 
> formulas in stata?
> Thank you.
> 
> Inna Becher
> 
> 
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