BETAINV Function

Arguments

p

is a numeric probability.

Range:

0 p 1

a

is a numeric shape parameter.

Range:

a > 0

b

is a numeric shape parameter.

Range:

b > 0

The BETAINV function returns the pth quantile from the beta distribution with shape parameters a and b. The probability that an observation from a beta distribution is less than or equal to the returned quantile is p.

Note:   BETAINV is the inverse of the PROBBETA function.  

x=betainv(0.001,2,4);

0.0101017879

Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.