Thanks. That is what I try to find. You know what, I have tried ?multinomial, but it didn't recognize. It is case sensitive I guess.
Johnny
-----Original Message-----
From: Berton Gunter [mailto:gunter.berton at gene.com]
Sent: Wednesday, February 22, 2006 5:44 PM
To: 'jim holtman'; Li,Qinghong,ST.LOUIS,Molecular Biology
Cc: r-help at stat.math.ethz.ch
Subject: RE: [R] multinomial test
Qinghong:
R Has an extensive Help system which you should learn to use.
help.search('multinomial')
?Multinomial
Jim: sample() is wrong -- it gives random samples, not probabilities.
-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of jim holtman
Sent: Wednesday, February 22, 2006 3:33 PM
To: Li,Qinghong,ST.LOUIS,Molecular Biology
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] multinomial test
?sample
sample(1:3, 6, TRUE, prob=c(2/9, 1/6, 11/18))
On 2/22/06, Li,Qinghong,ST.LOUIS,Molecular Biology <
Qinghong.Li at rdmo.nestle.com> wrote:
Hi All,
What is the R function for computing multinomial distribution, e.g.
f(2,1,3; 2/9, 1/6, 11/18, 6)?
That is, a total of 6 trials, event 1's p1=2/9, x1=2, event
x2=1, and event 3's p3=11/18, x3=3.
thanks,
Johnny
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