stats_dens_pmf_poisson
Probability mass function of the Poisson distribution
Description
float stats_dens_pmf_poisson(float $x, float $lb)
Returns the probability mass at x, where the random variable
follows the Poisson distribution whose parameter is lb.
Parameters
-
x
-
The value at which the probability mass is calculated
-
lb
-
The parameter of the Poisson distribution
Return Values
The probability mass at x or false for failure.