The POISSON function is one of the statistical functions. It is used to return the Poisson distribution.
Syntax
POISSON(x, mean, cumulative)
The POISSON function has the following arguments:
Argument
Description
x
The number of events, a numeric value greater than 0.
mean
The expected numeric value greater than 0.
cumulative
The form of the function, a logical value: TRUE or FALSE. If cumulative is TRUE, the function will return the cumulative Poisson probability; if FALSE, it will return the Poisson probability mass function.