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Re: st: technical question on the removal of outliers


From   Robert A Yaffee <bob.yaffee@nyu.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: technical question on the removal of outliers
Date   Mon, 28 Feb 2011 01:50:07 -0500

Rado,

    Type: help winsor
             findit winsorize
             or 
             help robmean

       Either of the first two will provide the answer.


webuse auto
winsor mpg, p(.01)

-  Robert


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

Biosketch: http://homepages.nyu.edu/~ray1/Biosketch2009.pdf

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

----- Original Message -----
From: rado645-bg@yahoo.de
Date: Saturday, February 26, 2011 4:28 pm
Subject: st: technical question on the removal of outliers
To: statalist@hsphsun2.harvard.edu


> Dear all, 
> 
> 
> is there a possibility to remove outliers in the highest 99th and 
> lowest 1st 
> percentile in stata before running regressions? I proceed currently by 
> using 
> sum, varlist, det after which I manually drop these observations. 
> 
> 
> However it is rather time consuming when one needs to run a lot of 
> regressions. 
> I would be glad if you could share such stata command with me. 
> 
> 
> Best,
> Rado
> 
> 
> 
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