Free Negative Binomial Distribution Calculator - Calculates the probability of the k^{th} success on the x^{th} try for a negative binomial distribution also known as the Pascal distribution.? ? It calculates the probability of exactly k successes, no more than k successes, and greater than k successes as well as the mean, variance, and standard deviation.

This calculator has 3 inputs.

This calculator has 3 inputs.

μ = k/p

f(n;k,p) = (n - 1)! * p^{k}(1 - p)^{n - k/(k - 1)!(n - k)!For more math formulas, check out our Formula Dossier}

f(n;k,p) = (n - 1)! * p

- binomial
- Polynomial which is the sum of two monomials
- distribution
- value range for a variable
- event
- a set of outcomes of an experiment to which a probability is assigned.
- mean
- A statistical measurement also known as the average
- negative binomial distribution
- a special case of the discrete phase-type distribution
- probability
- the likelihood of an event happening. This value is always between 0 and 1.

P(Event Happening) = Number of Ways the Even Can Happen / Total Number of Outcomes - standard deviation
- a measure of the amount of variation or dispersion of a set of values. The square root of variance
- variance
- How far a set of random numbers are spead out from the mean