: Negative Binomial

Negative Binomial

The probability mass function of the negative binomial distribution is

$\text{[math]}$

for $\text{[math]}$ .

Parameters:

$\text{[math]}$	is a positive integer $\text{[math]}$ 1 which represents the number
	of successes in a series of independent Bernoulli trials.
$\text{[math]}$	is the probability of success on each trial.