Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.

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

From |
Steve Samuels <sjsamuels@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: random samples within each of 1,152 categories |

Date |
Wed, 8 May 2013 17:30:40 -0400 |

I don't follow your thinking here. Questions: 1. Are the original data from a sample survey? If so, what is the design? 2. What's the goal of your analysis? 3.. Here is a hypothetical category of individuals (one of the 1,152), classified by your "Non-working female" criterion: Non-Working Female Other Total 17 33 50 The percentage of non-working females is 34%. What will the numbers in the sample of this category look like? Steve On May 7, 2013, at 9:18 PM, Olga Gorbachev wrote: Hello, I need to generate random samples for 1,152 categories and I am not sure how to do it. To be specific: for each cell, I need to compute a fraction of not working females. I generated the needed fraction (swr), like this: bys year ed white nokid wife: gen w=(work==0 & rlinc!=.) bys year ed white nokid wife: egen sw=sum(w) bys year ed white nokid wife: gen swr=100*sw/_N Thus, swr gives me the percent of nonworking females within each cell. I then generated categories/cells using group command: egen x=group(ed wife nokid white year) this gave me 1,152 groups. Thus, for each x I have a number given by swr that tells me what percentage I want to sample. So for x=1, swr=43.2 Thus, I'd like to 'designate' randomly for x=1 if work=1 43.2% of females to be not working. And I'd like to do this for each x. Ultimately, I'll need to sample with weights. I tried using gsample, but was unable to figure out the syntax for the looping that I think I'll need to do for this problem. Thank you in advance for your help. -- Olga Gorbachev Assistant Professor of Economics University of Delaware Newark, DE 19716 * * 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/

**References**:**st: random samples within each of 1,152 categories***From:*Olga Gorbachev <olga.gorbachev@gmail.com>

- Prev by Date:
**st: Avoiding use of Mata external variables in large programs** - Next by Date:
**st: detonator plot with three grouping variables** - Previous by thread:
**Re: st: random samples within each of 1,152 categories** - Next by thread:
**st: Re: random samples within each of 1,152 categories** - Index(es):