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
[email protected]
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