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Re: st: random sample

From   "Marcella Sapun" <>
To   <>
Subject   Re: st: random sample
Date   Thu, 26 Oct 2006 16:00:00 -0400

Hi Nick:
I just saw your email in my "full" inbox. This is great.
Thank you Nick and all of you for the helpful responses. I really

>>> n j cox <> 10/26/2006 11:10 AM >>>
You can put an -if uniform() < 0.1- condition on (e.g.)
a -use- statement. This samples records (observations).

As, by chance, this should yield a bit less than 10%
about half the time, some people wanting exactly 10%
would increase that fraction and then deal with surplus observations
once they had been read in.


for more general discussion.


Marcella Sapun

I want to read randomly 10% of a data set that contains about 1
records and 100 variables. How do I do that in stata?
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