IDAX.PPOIS_H - High-tail cumulative Poisson distribution

The PPOIS_H function returns the probability that the value of a variable that follows the Poisson distribution is greater than x. x is the number of successes that is expected within this time interval.

Syntax

IDAX.PPOIS_H(DOUBLE x, DOUBLE lambda)

Parameter descriptions

x: Mandatory.; The value that is to be computed.; If x is 0 or less, PPOIS(x,lambda) is null for all positive lambda values.; Data type: INT8
lambda: Mandatory.; The mean number of successes within a specified time interval.; If lambda is 0 or less, PPOIS(x,lambda) is null for all x values.; Min: 0.00000000001; Data type: DOUBLE

PPOIS_H(x,lambda) = 1-PPOIS(x,lambda) for all x values and positive lambda values.

Returned information

DOUBLE the cumulative probability distribution from x to plus infinity.