st: RE: generate random sample

["Philip Ryan" <philip.ryan@adelaide.edu.au>]

<<>>

The following will randomly sample 3 observations on variable x with
replacement from 10,000 observations with the distribution you specified.
Un-comment the -set seed- line (and provide a numeric seed) if you want
reproducibility between runs.  see -help bsample-


clear
* set seed <seednum>
input x fw
1 2000
2 1000
3 3000
4 3000
5 1000
end
expand fw
bsample 3, weight(fw)
list x if fw==1


Phil


Philip Ryan
Professor and Director
Data Management & Analysis Centre [DMAC]
University of Adelaide
-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of
ningli_yang@fastmail.fm
Sent: Monday, 16 January 2012 9:22 AM
To: statalist@hsphsun2.harvard.edu
Subject: st: generate random sample

Dear listers

I am using Stata/MP 11 Windows.

What is the good way to generate a sample from a population with
replacement?

Say, how to generate 3 independent random numbers from population
(1,2,3,4,5) with probability distribution (0.2, 0.1, 0.3, 0.3,0.1)?

Many thanks for the help.

Ning

--
Ning Li
Survey Methodologist
Melbourne Institute of Applied Economic and Social Research The 
University of Melbourne
Tel:  +61 3 9035 4949   Fax: +61 3 8344 2111
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