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prand
Format: prand( mean )
Arguments: (real) mean Optional distribution
mean; default = 1
Returns: (int) Pseudo-random number from a Poisson
distribution
Description: Numbers returned by the prand
primitive represent the number of random events that occur per
unit of time. For example, the number of customers that arrive in
a given hour is represented by a Poisson distribution. This
probability distribution is characterized by the mean number of
events per unit time. The result returned by prand is
always a positive integer.
Examples: prand = random
number form a Poisson distribution with a mean of 1
prand(3) = random number from
a Poisson distribution with a mean of 3, PDF graphed
below
See Also: rand, drand, trand, nrand, lrand, brand, grand, betarand, crand, setrand, correlate
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