POISSON (PQL - xl)

This function returns the Poisson distribution

Syntax

POISSON(x, mean, cumulative)
Function Arguments

Name

Description

Type

Optional

x

Number of events Provide an integer, or the value is truncated. The number must be greater than zero

Number

mean

Expected numeric value The number must be greater than zero

Number

cumulative

Set to TRUE to return the cumulative Poisson probability that the number of random events occurring is between zero and nevents inclusive. Set to FALSE to return the Poisson probability mass function that the number of events occurring is exactly nevents

StringOrNumber

Comments

This function is the same as the Microsoft Excel 'POISSON' function - using the same inputs, logic and outputs.