Re: Ask Dr. Random

[Doug Donalson]

If you want to do your own, Law and Kelton has formulas for most of the
distributions that aren't hard to code up.  (You probably already know
this?)

----- Original Message -----
From: M Lang / S Railsback <address@hidden>
To: swarm modelling <address@hidden>
Sent: Wednesday, November 15, 2000 11:38 AM
Subject: Ask Dr. Random


> Hey Sven (or anybody else that knows more about probability than I do):
>
> I have a problem that I think would best be modeled using a Poisson
> distribution, which is not in the Random library.
>
> The mean number of times per day a single fish is caught by fisherpeople
> is 0.5 (for example; there are a LOT of people fishing for hatchery
> trout at this site). I need to randomly draw the number of times each
> individual fish was caught in a day, which will be an integer of zero or
> greater.
>
> I believe this problem is best represented with the Poisson
> distribution, which models the number of times an event occurs within a
> specified time period, given the mean occurrence rate. (The exponential
> distribution would tell me the probability of a fish being caught at
> least once during a day, which is not what I want.)
>
> This seems like a fairly common kind of problem. Has somebody
> implemented it already?
>
> Steve
> --
> address@hidden
> Lang, Railsback & Assoc.
> 250 California Ave., Arcata CA 95521
> 707-822-0453; Fax 822-1868
>
>
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   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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