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RE: st: RE: mlogit problem with "predict"


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: mlogit problem with "predict"
Date   Tue, 7 Aug 2007 21:27:17 +0100

-stripplot- from SSC will let you 
compare variables in groups. 

stripplot pc1-pc4, by(tax) 

gives you one graph, not four. See
the help for further options. 

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

Maarten buis
 
> --- Sheela Athreya <athreya@neo.tamu.edu> wrote:
> > The idea that maybe I have an (almost) perfect prediction occurred 
> > to me too, but I don't know how to investigate it. Perhaps there is
> > an equivalent test to -tab tax pc- that allows me to look at  
> > quantitative variables for anything that is off?
> 
> One option is to look at dotplots: 
> dotplot pc1, over(tax) median
> dotplot pc2, over(tax) median
> dotplot pc3, over(tax) median
> dotplot pc4, over(tax) median
> 
> They give you simultaneously an idea about the strength of the
> association and the number of observations in each category.

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