Beta Distribution

Functions > Statistics > Probability Distributions > Beta Distribution

Beta Distribution

The following functions are associated with the beta equation:

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• dbeta(x, s1, s2)—Returns the probability density for value x.

• pbeta(x, s1, s2)—Returns the cumulative probability distribution for value x.

• qbeta(p, s1, s2)—Returns the inverse cumulative probability distribution for probability p.

• rbeta(m, s1, s2)—Returns a vector of m random numbers having the beta distribution.

Arguments

• x is a scalar or vector of real values, 0 ≤ x ≤ 1. To allow integration and other operations over this argument, values outside of the stated range are allowed, but they produce a 0 result.

• s1, s2 are real shape parameters, s1, s2 > 0.

• p is a real probability, 0 ≤ p ≤ 1.

• m is an integer, m > 0.