Distributions Calculator

A multinomial coefficient describes the number of possible partitions of n objects into k groups of size n1, n2, …, nk. The formula to calculate...

The multinomial distribution describes the probability of obtaining a specific number of counts for k different outcomes, when each outcome has a fixed probability...

This calculator uses the negative binomial distribution to find the probability of experiencing k failures before experiencing r successes when the probability of success...

This calculator finds probabilities associated with the geometric distribution based on user provided input. p (probability of success on a given trial) x (number of failures...

This calculator finds probabilities associated with the hypergeometric distribution based on user provided input. Population size # Successes in population Sample size # Successes in sample (x) P(X =...

A z-score tells you how many standard deviations away an individual data value falls from the mean. It is calculated as: z-score = (x –...

The Poisson distribution is one of the most commonly used distributions in statistics. This calculator finds Poisson probabilities associated with a provided Poisson mean and...