[R] New user: Custom probability distribution

Matthias Kohl Matthias.Kohl at stamats.de
Thu Feb 9 22:27:42 CET 2006


Hi,

you can use our package distr respectively distrEx.
require(distrEx)
D1 <- DiscreteDistribution(supp=0:3, prob = 12/(25*(1:4)))
plot(D1)
r(D1)(50)

hth
Matthias

>Hello,
>
>   Given a probability function: p(x) = 12 / (25(x+1)) , x=0, 1, 2, 3 we
>generate the following values:
>
>  C1  C2
>  0   0.48
>  1   0.24
>  2   0.16
>  3   0.12
>
>   Now, I'm supposed to create 50 random values using this table. In
>MiniTab, I simply selected Calc -> Random Data -> Discrete, and selected
>the columns, and it created 50 random values in a new column.[1]
>
>How do I do the same thing in R?
>
>   [1] You may be wondering why I'm telling you this. Well, it's because
>if I were in your shoes, I'd think "Oh, someone wants me to solve his
>homework.". I have already solved it using MiniTab, but I want to be
>able to use R instead (since I prefer NetBSD).
>
>  
>
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>
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>


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