poisson

poisson, function

def pure poisson(lambda: number): ranvar

Returns the Poisson distribution of mean lambda.

Examples

table T = with
  [| as Lambda |]
  [| 0.0       |]
  [| 1.5       |]
  [| 5.5       |]
  [| 10.0      |]

show table "" a1b4 with
  T.Lambda
  poisson(T.Lambda)

This will output the following table:

Errors

Fails if the argument lambda is greater than 1000000 (one million).

See also

• The Poisson distribution.
• mean