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.
See
http://www.stata.com/support/faqs/stat/sampling.html
for more general discussion.
Nick
[email protected]
Marcella Sapun
I want to read randomly 10% of a data set that contains about 1 million
records and 100 variables. How do I do that in stata?
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