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Mathematica > Discrete Statistical Distributions >

Built-in Mathematica Symbol

BetaBinomialDistribution

, n]
represents a beta binomial mixture distribution with beta distribution parameters

and

, and

binomial trials.

The beta-binomial distribution is a binomial distribution with trials whose probability parameter p follows a beta distribution with shape parameters and . »

BetaBinomialDistribution allows and to be any positive real numbers, and n to be any positive integer.

Mean and variance of a beta binomial distribution:

Probability density function: