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st: RE: Percentiles: Identify of smallest observation closet to percentile value


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Percentiles: Identify of smallest observation closet to percentile value
Date   Mon, 3 Feb 2003 10:08:18 -0000

Rod Hunter

> I would be grateful if a StataList member could tell me how I can
> efficiently indentify the observation that is the smallest
> observation
> closest to a percentile value? Similarly, how can I generate a new
> variable that is the smallest observation closest to the percentile?

There is some fuzziness about this problem because of the possibility
of ties. But even when there is a unique answer, do you want
to put a single value into a variable?

It might help if you were to use a commonly accessible data
set -- e.g. the auto data -- to give examples of what you
want to do.

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

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