PROBBETA Function

PROBBETA Function

Returns the probability from a beta distribution

Category: Probability

See: 'CDF Function' on page 418

Syntax

PROBBETA ( x,a,b )

Arguments

x

• is a numeric random variable.

• Range: ‰ x ‰ 1

a

• is a numeric shape parameter.

• Range: a > 0

b

• is a numeric shape parameter.

• Range: b > 0

Details

The PROBBETA function returns the probability that an observation from a beta distribution, with shape parameters a and b , is less than or equal to x .

Example

SAS Statements	Results
x=probbeta(.2,3,4);	0.09888