poisstat

Poisson mean and variance

Syntax

M = poisstat(lambda)
[M,V] = poisstat(lambda)

Description

M = poisstat(lambda) returns the mean of the Poisson distribution using mean parameters in lambda. The size of M is the size of lambda.

[M,V] = poisstat(lambda) also returns the variance V of the Poisson distribution.

For the Poisson distribution with parameter λ, both the mean and variance are equal to λ.

Examples

Find the mean and variance for the Poisson distribution with λ = 2.

[m,v] = poisstat([1 2; 3 4])
m =
   1   2
   3   4
v =
   1   2
   3   4
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