Statalist


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

Re: st: RE: normal distributions


From   "Martin Weiss" <Martin.Weiss1@gmx.de>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: normal distributions
Date   Thu, 19 Mar 2009 18:55:05 +0100

<>

If your version is something other than 10.1, use -invnormal(uniform())- to generate standard normal random numbers. Add the mean and multiply by the sd if desired...

HTH
Martin
-------- Original-Nachricht --------
> Datum: Thu, 19 Mar 2009 11:43:34 -0600
> Von: "Rodrigo Briceño" <rjbriceno@gmail.com>
> An: statalist@hsphsun2.harvard.edu
> Betreff: Re: st: RE: normal distributions

> Thanks Nick. I forgot to mention that I tried with and without spaces,
> because the error appears in any case.
> . gen rn = rnormal(0,9)
> Unknown function rnormal()
> r(133);
> 
> 
> 2009/3/19 Nick Cox <n.j.cox@durham.ac.uk>:
> > This is not a matter covered by an FAQ because it's just a matter of
> standard syntax as explained in the help and the manuals.
> >
> > Think about it from Stata's point of view. Only if you write -rnormal()-
> with no space -- and arguments supplied within () -- does it know that you
> want a function with that name. There is no rule against a variable called
> -rnormal-, so your reference to -rnormal- followed by a space indicates to
> Stata that you mean to refer to a variable with that name. You don't have
> one, so it throws you out in a state of puzzlement with a message that is
> perfectly reasonable.
> >
> > set obs 100
> > gen rn = rnormal(0,9)
> >
> > Nick
> > n.j.cox@durham.ac.uk
> >
> > Rodrigo Briceño
> >
> > I would like to know if there is a function similar to this that I
> > found in R: norm <- rnorm(100, 2, 5)
> > The trick is to generate a variable that contains 100 values with are
> > normal distributed with mean 2 and stdev 5.
> >
> > I found that rnormal is a function in Stata, but I am not sure about
> > the way to write the sintax to produce that outcome. I tried with:
> > generate rn=rnormal (0,9) but a message telling me rnormal is not
> > found appeared.
> >
> > I looked into FAQ but there are no related issues...
> >
> > *
> > *   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/
> >
> 
> 
> 
> -- 
> Rodrigo Briceño
> Economist
> +506  22-91-12-00 ext. 113   Office
> +506  22-32-08-30                Fax
> rjbriceno@gmail.com
> 
> MSN: jbric98@hotmail.com
> SKYPE: rbriceno1087
> 
> *
> *   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/

-- 
Martin Weiss
Hackersteigle 3
72076 Tübingen
00497071/793535
00491784597218

Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: http://www.gmx.net/de/go/multimessenger01
*
*   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/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index