Mean of the Poisson distribution by its series

The series sum k P(k), truncated 15 standard deviations above a.

Usage

PoisMean(a)

Arguments

a

expected count, >= 0.

Value

list(mean).

References

Morin, D. J. (2016). Probability: For the Enthusiastic Beginner. Createspace. Eq (4.92).

Examples

PoisMean(3)$mean
#> [1] 3