GAMMA.INV

GAMMA.INV(probability, alpha, beta)

Returns the inverse of the cumulative probability function for a gamma distribution.

probabilityThe probability associated with the distribution.
alphaThe first parameter to the distribution.
betaThe second parameter to the distribution.

REMARKS
* For an illustrated example refer to the page under Distributions
* The gamma distribution is a continuous distribution
* You can use the GAMMA.DIST function to
* You can use the GAMMA function
* This function was added in Excel 2010 to replace the GAMMAINV function.
* For the Microsoft documentation refer to support.microsoft.com
* For the Google documentation refer to support.google.com

 A
1=GAMMA.INV(0.068094, 9, 2) = 10.00
2=GAMMA.INV(0.5, 4, 2) = 7.34
3=GAMMA.INV(0.068, 4, 2) = 3.04
4=GAMMA.INV(GAMMADIST(7, 5, 1, TRUE), 5, 1) = 7.00
5=GAMMA.INV(GAMMADIST(0.5, 4, 2, TRUE), 4, 2) = 0.50
6=GAMMA.INV(0.5, 4, 2) = 7.34
7=GAMMA.INV(0.5, -9, 2) = #NUM!
8=GAMMA.INV(-2, 9, 2) = #NUM!
9=GAMMA.INV(-2, "some text", 2) = #VALUE!

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