NegBinomDist

Syntax

NegBinomDist(FailedTrials, SuccessfulTrials, Probability)

Parameters

FailedTrials. The number of failed trials.

SuccessfulTrials. Threshold value of successes.

Probability. Success probability. Available values are taken from the [0, 1] range.

NOTE. The following condition should be satisfied (FailedTrials + SuccessfulTrials - 1) > 0.

Description

The method returns the negative binomial distribution.

Comments

The function returns the probability for FailedTrials of unsuccessful trials to occur before SuccessfulTrials of successful trials has been achieved, provided that the probability of a successful trial is constant and equal to the Probability argument value. This function is similar to binomial distribution, except for the fact that the number of successes is fixed and the number of trials is variable. Similarly to binomial distribution trials, these trials are considered to be independent.