Mean and Variance of the Poisson Distribution

Formula: \(\mu = \lambda\) \(\mathrm{Var}(X) = \lambda\)

mpois(lambda)

Arguments

lambda

Rate parameter (mean)

Value

List with mean and variance

References

Ross, S.M. (2014). Introduction to Probability Models. Academic Press.

See also

dpois

Examples

mpois(lambda = 4)
#> $mean
#> [1] 4
#> 
#> $variance
#> [1] 4
#>