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Negative Binomial Distribution Calculator - PMF

Calculates the the number of successes in a sequence of independent and identically distributed Bernoulli trials before a specified (non-random) number of failures occurs.



See the Statistical Distributions Overview page for more statistical distribution calculators.

Example 1

Value Keystrokes Display Description
3 fail 3.000 Stores the fail value.
5 sccs 5.000 Stores the sccs value.
.4 prob 0.4000 Stores the prob value.
  pmf 0.07741 Calculates the pmf.


Negative Binomial Distribution - Wikipedia

"Different texts adopt slightly different definitions for the negative binomial distribution. They can be distinguished by whether the support starts at k = 0 or at k = r, whether p denotes the probability of a success or of a failure, and whether r represents success or failure,[1] so it is crucial to identify the specific parametrization used in any given text."