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Re: skewed randoms
From: |
Doug Donalson |
Subject: |
Re: skewed randoms |
Date: |
Tue, 8 Feb 2000 14:39:56 -0800 |
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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Swarm-Modelling is for discussion of Simulation and Modelling techniques
esp. using Swarm. For list administration needs (esp. [un]subscribing),
please send a message to <address@hidden> with "help" in the
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