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st: -ppplot added to SSC


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: -ppplot added to SSC
Date   Fri, 12 Mar 2004 16:04:32 -0000

Thanks to Kit Baum, a -ppplot- package has been 
added to SSC. Stata 8 is required. To install, 
use -ssc-. 

-ppplot- produces a P-P (probability-probability) plot
of the cumulative distribution functions of one or
more groups or variables against that of a reference
group or variable, for the same sets of observed values.
By default the reference group is the last variable named,
or, with a single variable, that defined by the highest value
of the grouping variable. 

Similar or even identical ideas come under a variety of 
guises, e.g. relative distribution functions, ROC, dominance 
diagrams, [add your own]. 


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


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