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Re: st:. : [problem with outliers in regression]


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st:. : [problem with outliers in regression]
Date   Wed, 7 Aug 2002 18:08:36 +0100

Nazaria Solferino asked, in reply to my earlier posting, 

Could you give me some suggestions about transformation?

>>> One source of principles and prejudices on transformation 
is obtained by typing in Stata 

. view http://www.stata.com/users/njc/topichlp/transint.hlp

If you want a copy for yourself, just use Stata's 
-copy- command. 

I see that document was last revised in 1999. These 
days I am more inclined to point to generali{s|z}ed 
linear models as a deeper solution. There is 
a very good pedagogic paper 

Lane, P.W. 2002. Generalized linear models
in soil science. European Journal of Soil 
Science 53, 241-251

which focuses on the merits of transformation 
as compared with generalized linear models. 
I owe this reference to Stata user Allan Reese. 

You may be able to access it electronically. 
Don't be put off by the mention of soil science; 
you don't need to understand anything much about 
soil science. The examples are, as it were, 
just like the auto data.  

Nick 
n.j.cox@durham.ac.uk 
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