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st: AW: Area under a percentile point


From   "Martin Weiss" <[email protected]>
To   <[email protected]>
Subject   st: AW: Area under a percentile point
Date   Tue, 3 Feb 2009 15:12:06 +0100

<> 

Let`s keep those below the 75 percentile of generated normal deviates...

*************
clear*
set obs 1000
generate x=rnormal()
_pctile x, p(75)
keep if x<=r(r1)
*************



HTH
Martin

-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von zeynep elitas
Gesendet: Dienstag, 3. Februar 2009 14:28
An: [email protected]
Betreff: st: Area under a percentile point

I have a simple question which I do not have the answer for. Is there
a way to tell Stata to keep the data under a certain percentile point
and drop the rest?  This is important since in my data a percentile
point has often the same value as the ones below and over it.

Thanks
Zeynep Elitaş

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