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

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 19:11:46 +0000 |

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/

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

**RE: st: constrained sum of random values***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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

- Prev by Date:
**RE: st: constrained sum of random values** - Next by Date:
**Re: st: constrained sum of random values** - Previous by thread:
**st: RE: constrained sum of random values** - Next by thread:
**RE: st: constrained sum of random values** - Index(es):

© Copyright 1996–2017 StataCorp LLC | Terms of use | Privacy | Contact us | What's new | Site index |