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From |
Eva Poen <eva.poen@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: constrained sum of random values |

Date |
Wed, 25 Mar 2009 19:12:46 +0000 |

<> I just saw Nick's reply which is much better. I suggest you use his. Eva 2009/3/25 Eva Poen <eva.poen@gmail.com>: > Carlo, > > If you put such a constraint on your random values, it means that at > most 76 of them can be random; you need one value to bring the sum up > to 9900. This is very simple to do: > > clear > set obs 77 > set seed 123 > gen n = rnormal(125,25) in 1/76 > qui sum n > replace n = 9900-r(sum) in 77 > > > You didn't mention what kind of random values you want, i.e. which > distribution. I assumed normal distribution with mean 125 and sd of > 25. > > Eva > > > 2009/3/25 Carlo Lazzaro <carlo.lazzaro@tiscalinet.it>: >> Dear Statalisters, >> is there any way for imposing Stata 9.2/SE to create a variable composed of >> 77 random values so that the sum of these random values is 9900? >> >> Thanks a lot for your kindness and for your time. >> >> Kind Regards, >> Carlo >> > * * 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/

**References**:**st: constrained sum of random values***From:*"Carlo Lazzaro" <carlo.lazzaro@tiscalinet.it>

**Re: st: constrained sum of random values***From:*Eva Poen <eva.poen@gmail.com>

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