Re: st: sample selection (-gsample) in stata

[Shikha Sinha <shikha.sinha414@gmail.com>]

Thanks Jann.

-gsample looks good, but I am still struggling. How do I calculate the
size for -gsample. I want the select companies from each cities and of
each type in each city.

Thanks,
S


On Tue, Jun 28, 2011 at 12:59 PM, Joerg Luedicke
<joerg.luedicke@gmail.com> wrote:
> Maybe -gsample- from Ben Jann might be helpful (-findit gsample-).
>
> J.
>
> On Tue, Jun 28, 2011 at 3:43 PM, Shikha Sinha <shikha.sinha414@gmail.com> wrote:
>> Dear all,
>>
>> My question is about sample selection in stata. I want to select 100
>> companies loated in 10 cities from an universe of 800 comapnies. My
>> data structure is as below:
>>
>> City                  company id           Type (manufacturing)
>> 1                             1                                 1
>> 1                             2                                 0
>> 1                             3                                  1
>> 2                             4                                  0
>> 2                             5                                  1
>> 2                             6                                   0
>> ..
>> .
>> .
>> .
>>
>> .
>> .
>> so on.
>>
>> I want to select a sample of 25 companies from these 100, using
>> probablity weights of slection i.e. Probability proportional to size.
>> Is there any comand in stata.
>> I have tried -sample but of no avail.
>>
>> Please advise.
>> *
>> *   For searches and help try:
>> *   http://www.stata.com/help.cgi?search
>> *   http://www.stata.com/support/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/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>

*
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