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- Poisson.* is an S-Basic program designed to work in the extended
- range. Like Binomial.* it is written making use of logarithms.
- The same procedure is used to find out the number of good digits
- in the answer. # good = 5 - #of digits in characteristic - # of
- iterations of X.
- The Poisson distribution is used where the mean number of
- events is know (on the average 158.394 telephone calls come in an
- hour at a certain buisness, what is the probability only 23
- coming in an hour on a certain day?) Mean = lambda = 158.394;
- number of occurances (must be integer) = 23. Logprob =
- -40.6081... ; probability = 2.46E-41. Note that this program will
- work for Probabliity < 1E-128. For instance if we have a poisson
- process with X = 452, Lambda = 35.612; we wind up with a
- proability = 2.03 E -320. This is reported as 2.03 Ten -320 by
- the progrem. A Nevada Basic version of the program is available
- on this disk. This program was written by
- \
- Michael P Finerty
- 2358 E Parkside Drive
- Tucson, Arizona 85713
- omial.* it is written making use of logarithms.