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From |
Mauro Caselli <m.caselli@unsw.edu.au> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Random draws from multivariate normal not centered at the mean |

Date |
Tue, 15 Feb 2011 11:45:52 +1100 |

Unfortunately, that doesn't quite do the job. The means() option tells the means of the distribution you draw from, which in my previous example were 4 and 5. But is it possible to draw from that distribution with mean 4 and 5 a set of numbers that are not centered around those means? If you input in the means() option the means that you would like, the draws are from a different distribution and not from the original one I am interested in. I hope that this clears what I am trying to do. Mauro On 15 February 2011 11:10, David Muller <davidmull@gmail.com> wrote: > > The -means()- option in -drawnorm- does what you require. It's > documented in -help drawnorm-. > > Cheers, > David > > On Tue, Feb 15, 2011 at 10:34 AM, Mauro Caselli <m.caselli@unsw.edu.au> wrote: > > Dear Stata users, > > > > I have the following question: > > I have a multivariate normal distribution with two variables > > (therefore I have means and variances of both and the correlation > > coefficient). I want to draw psuedo-random draws from this > > distribution and I know that this can be done with the command > > drawnorm. However, I would like to have draws not centered at the mean > > of the population but rather at a different value of one of the two > > variables. > > So, if the means are 4 for x and 5 for y, for instance I would like to > > draw ten numbers that give an average of 3 for x and follow the > > multivariate normal to give the relative values of y. Is this possible > > with drawnorm? If not, can anyone point me in the right direction? > > > > Thank you very much. > > > > With best wishes, > > > > Mauro > > > > > > > > -- > > Mauro Caselli > > Postdoctoral Research Fellow > > School of Economics, Room 410 > > Australian School of Business > > The University of New South Wales, NSW, 2052 > > Australia > > Phone: +61 (0)2 9385 3561 > > Email: m.caselli@unsw.edu.au > > * > > * 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/ -- Mauro Caselli Postdoctoral Research Fellow School of Economics, Room 410 Australian School of Business The University of New South Wales, NSW, 2052 Australia Phone: +61 (0)2 9385 3561 Email: m.caselli@unsw.edu.au * * 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: Random draws from multivariate normal not centered at the mean***From:*Maarten buis <maartenbuis@yahoo.co.uk>

**Re: st: Random draws from multivariate normal not centered at the mean***From:*David Muller <davidmull@gmail.com>

**References**:**st: Random draws from multivariate normal not centered at the mean***From:*Mauro Caselli <m.caselli@unsw.edu.au>

**Re: st: Random draws from multivariate normal not centered at the mean***From:*David Muller <davidmull@gmail.com>

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