Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: Sampling question


From   Wendy Alfaro <wendyalfaro07@gmail.com>
To   statalist@hsphsun2.harvard.edu
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 <sjsamuels@gmail.com> 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 <sjsamuels@gmail.com> wrote:
>
>
>
> --
> Wendy Alfaro Chaves
> Consultora e investigadora
> Agricultura, ambiente y alimentos
> T: (506) 2494-3647
> Correo-e: wendyalfaro07@gmail.com
> 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/
>
>
> *
> *   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/



-- 
Wendy Alfaro Chaves
Consultora e investigadora
Agricultura, ambiente y alimentos
T: (506) 2494-3647
Correo-e: wendyalfaro07@gmail.com
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/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index