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From | "Alok K. Bohara" <bohara@unm.edu> |
To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
Subject | RE: st: sampling with replacement |
Date | Mon, 4 Feb 2013 05:38:57 +0000 |
Thanks Joerg. Alok K. Bohara, UNM ________________________________________ From: owner-statalist@hsphsun2.harvard.edu [owner-statalist@hsphsun2.harvard.edu] on behalf of Joerg Luedicke [joerg.luedicke@gmail.com] Sent: Friday, January 25, 2013 9:05 AM To: statalist@hsphsun2.harvard.edu Subject: Re: st: sampling with replacement One possibility could be: *------------------------------ mat swr = J(100,2,.) mat colnames swr = ndraw draw clear set obs 4 gen x4 = _n*10+1 forval i = 1/100 { cap drop u gen u = runiform() sort u loc d = x4[1] mat swr[`i',1] = `i' mat swr[`i',2] = `d' } mat li swr *------------------------------ But have a look at Bill Gould's nice blog postings on random number generation in Stata, especially part 3: http://blog.stata.com/2012/08/29/using-statas-random-number-generators-part-3-drawing-with-replacement/ Joerg On Fri, Jan 25, 2013 at 10:30 AM, Alok K. Bohara <bohara@unm.edu> wrote: > Hello: > > How can I use stata to draw a sample with replacement? > > I have 4 tokens marked; X4: (11, 21, 31, 41). Say, I want to draw it randomly (with replacement) 100 times, and store (and save) them as a vector of X100. > > Thanks > Alok Bohara > UNM > > * > * 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/ * * 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/