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RE: st: RE: bandwidth from gwarpreg and its use in lowess


From   "Lazarte Alcala, Naneida" <naneida@okstate.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: bandwidth from gwarpreg and its use in lowess
Date   Tue, 16 Feb 2010 12:13:07 -0600

Thank you Maarten.
Best,
Naneida

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Maarten buis
Sent: Monday, February 15, 2010 1:18 PM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: RE: bandwidth from gwarpreg and its use in lowess

--- On Mon, 15/2/10, Lazarte Alcala, Naneida wrote:
> Iam sorry, I'll try to be more clear. 

Your question was clear, and my summary of Nick's answer is
that what is optimal depends on your definition of optimal, 
and many such definitions have been invented, but none are 
truely more useful then carefully looking at your data and 
the consequences of your model. So plot your data, the 
smooth, the residuals for different bandwidths, and see if 
they make sense.

-- Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany

http://www.maartenbuis.nl
--------------------------


      

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