Re: skewed randoms

[Doug Donalson]

That book on simulation with all the distributions has a bit on how to trim
a Gaussian I think.  Basically, you divide each ramdom draw by the
percentage you trimmed off the distribution.  This allows the total area to
continue to be equal to one.  WARNING:  This was off the top of my head from
along time ago.  The basic idea is fine, but the details may not be correct.

Cheers,

   D3
----- Original Message -----
From: Paul Johnson <address@hidden>
To: <address@hidden>
Sent: Tuesday, February 08, 2000 2:01 PM
Subject: Re: skewed randoms


> Ginger Booth wrote:
> >
> > Dear gang,
> >         Does anyone happen to know how to generate skewed random
> > Gaussian deviates? The normally distributed random numbers are
> > no problem, I'm just trying to figure out how to skew (er? :) them.
> > (Will now put pen to paper and see if I can figure it out.... ;)
> >
> > Thanks,
>
> Do you mean you want a Beta or some other nonsymmetric distribution?  If
> so, I will tell you the magic recipe, write me.  If you want truncated
> Normals, let me know how you do it because I've been curious how it can
> be done.
>
> --
> Paul E. Johnson                       email: address@hidden
> Dept. of Political Science            http://lark.cc.ukans.edu/~pauljohn
> University of Kansas                  Office: (785) 864-9086
> Lawrence, Kansas 66045                FAX: (785) 864-5700
>
>
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