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Re: st: Sampling question
From
Steve Samuels <[email protected]>
To
[email protected]
Subject
Re: st: Sampling question
Date
Sun, 25 Nov 2012 16:35:27 -0600
Oops, I changed the example code but not the description. Sorry.
Wendy:
I suggest that you use Ben Jann's -gsample- command, from SSC.
The following example draws observations from 3 cateogries of rep78.
Adapt to your own needs. You need the -preserve- and -restore- commands,
because -gsample- keeps only the sampled observations.
Steve
********************************
sysuse auto, clear
preserve
gsample 10 if rep78==3, wor
tempfile t3
save `t3', replace
restore
preserve
gsample 5 if rep78==4, wor
tempfile t4
save `t4', replace
restore
preserve
gsample 3 if rep78==5, wor
append using `t3'
append using `t4'
tab rep78
save autosamp, replace
******************************
On Nov 25, 2012, at 3:51 PM, Wendy Alfaro wrote:
Dear Steve:
The answer is b.
Thank you in advance,
Wendy
On Sun, Nov 25, 2012 at 3:27 PM, Steve Samuels <[email protected]> wrote:
--
Wendy Alfaro Chaves
Consultora e investigadora
Agricultura, ambiente y alimentos
T: (506) 2494-3647
Correo-e: [email protected]
Skype: wendy07
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