Hi, xiechao
i don't think that is a R specific problem. you mean u got two
random variables X,Y and both
of them binomial distributed and you want to find the distribution of
a new variable Z = X/Y.
That is a basic transformation problem. u can start with introducing a
new r.v. namely W, by
letting it equal to X you obtain W=X,Z=X/Y from which u have X = W
and Y = W / Z. It is easy
to find the Jacobian of this transformation, and the left is routinely.
regards.
On 2008-6-27, at ??8:29, Xie Chao wrote:
> Hi all,
>
> I am a biological student and need your help in statistics.
>
> I have two sets of binomial distributed numbers: {a1, a2, ..., an}
> and {b1,
> b2, ..., bn}.
> How can I get the distribution of the ratios of the two sets of
> numbers
> {a1/b1, a2/b2, ..., an/bn}? Is there a formula to transform the
> distributions? Or where I can start if I want to learn necessary
> techniques?
> Thank you a lot!
>
> xiechao
>
> [[alternative HTML version deleted]]
>
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-----------------------------------------------
Peng Jiang
??
Ph.D. Candidate
Antai College of Economics & Management
????????
Department of Mathematics
???
Shanghai Jiaotong University (Minhang Campus)
800 Dongchuan Road
200240 Shanghai
P. R. China