Re: [R] discrete probability distribution

From: Matthias Kohl <Matthias.Kohl_at_stamats.de>
Date: Thu 23 Feb 2006 - 19:41:34 EST

Hi,

have a look at
http://mathworld.wolfram.com/GeometricDistribution.html respectively
http://mathworld.wolfram.com/NegativeBinomialDistribution.html with r = 1.

In R have a look at
?rnbinom
with n = 1 and in your case: prob = 1-p

hth
Matthias

>Hi
>
>I want to sample from a discrete random variable X, defined on
>the non-negative integers, with
>
>prob(X=0) = (1-p)
>prob(X=1) = (1-p)*p
>...
>prob(X=i)=(1-p)*p^i
>...
>
>
>
>Before reinventing the wheel,
>is there a ready-made R function to give me such a thing?
>
>
>--
>Robin Hankin
>Uncertainty Analyst
>National Oceanography Centre, Southampton
>European Way, Southampton SO14 3ZH, UK
> tel 023-8059-7743
>
>______________________________________________
>R-help@stat.math.ethz.ch mailing list
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>
>

-- 
StaMatS - Statistik + Mathematik Service
Dr. rer. nat. Matthias Kohl
Gottlieb-Keim-Straße 60
95448 Bayreuth
Phone: +49 921 50736457
E-Mail: matthias.kohl@stamats.de
Home: www.stamats.de

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Received on Thu Feb 23 19:49:55 2006

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