The Poisson Distribution
Random:
unsigned int
gsl_ran_poisson
(const gsl_rng *
r
, double
mu
)
This function returns a random integer from the Poisson distribution with mean
mu
. The probability distribution for Poisson variates is,
p(k) = {\mu^k \over k!} \exp(-\mu)
for k >= 0.
Function:
double
gsl_ran_poisson_pdf
(unsigned int
k
, double
mu
)
This function computes the probability p(k) of obtaining
k
from a Poisson distribution with mean
mu
, using the formula given above.