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Re: st: Sampling question
From
Wendy Alfaro <[email protected]>
To
[email protected]
Subject
Re: st: Sampling question
Date
Sun, 25 Nov 2012 16:44:48 -0600
Thank you Steve.
Best regards,
On Sun, Nov 25, 2012 at 4:35 PM, Steve Samuels <[email protected]> wrote:
> 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
> *
> * For searches and help try:
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>
>
> *
> * For searches and help try:
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> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
--
Wendy Alfaro Chaves
Consultora e investigadora
Agricultura, ambiente y alimentos
T: (506) 2494-3647
Correo-e: [email protected]
Skype: wendy07
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/