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Re: st: rreg vs qreg regression


From   Ricardo Ovaldia <ovaldia@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: rreg vs qreg regression
Date   Mon, 1 Sep 2003 14:24:40 -0700 (PDT)

--- Nick Cox <n.j.cox@durham.ac.uk> wrote:

> Some partial thoughts follow. I make 4 points, but 
> others could in principle make at least 40, because
> this all raises a bundle of highly interrelated
> issues.

Thank you Nick for your valuable comments. 

After reading some literature (including the Stata
manuals) I get the sense that -rreg- is more robust to
outliers, whereas -qreg- is more robust to the
skewness in the data. However, I have not found this
stated anywhere. Those anyone have any thoughts about
this?

Thanks,
Ricardo.


=====
Ricardo Ovaldia, MS
Statistician 
Oklahoma City, OK

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