GAMINV Function

Returns a quantile from the gamma distribution.

Category:

Quantile

Syntax

GAMINV(p,a)

Required Arguments

p

is a numeric probability.

Range

0 ≤ p < 1

a

is a numeric shape parameter.

Range

a > 0

Details

The GAMINV function returns the p^th quantile from the gamma distribution, with shape parameter a. The probability that an observation from a gamma distribution is less than or equal to the returned quantile is p.

Note: GAMINV is the inverse of the PROBGAM function.

Example

The following SAS statements produce these results.

SAS Statement	Result
q1=gaminv(0.5,9);	8.6689511844
q2=gaminv(0.1,2.1);	0.5841932369

GAMINV Function

Syntax

Required Arguments

p

a

Details

Example

See Also