poissonDistribution
poissonDistribution(
rate):Distribution
Defined in: poisson-distribution.ts:24
The Poisson distribution — the number of events in a fixed interval when they
arrive independently at a constant average rate.
Both tails come from the incomplete gamma by the exact identity P(X ≤ k) = Q(k + 1, λ), so neither is a sum of terms and neither is reached by
subtracting the other.
Parameters
Section titled “Parameters”number
Expected number of events; must be positive.
Returns
Section titled “Returns”The distribution.
Throws
Section titled “Throws”When rate is not positive.