BETA.INV

BETA.INV(probability, alpha, beta [,A] [,B])

Returns the probability of getting greater than a particular value in a beta distribution.

probability	The probability associated with the distribution.
alpha	The parameter to the distribution.
beta	The parameter to the distribution.
A	(Optional) The lower bound to the interval of x.
B	(Optional) The upper bound to the interval of x.

REMARKS

* Added in Excel 2010.
* This function replaces the BETAINV function.
* If "A" is left blank, then ??
* If "B" is left blank, then ??
* For the Microsoft documentation refer to support.microsoft.com

	A
1	=BETA.INV(0.685470581,8,10,1,3) = 2
2	=BETA.INV(0.2,1.5,4,1,2) = 1.112
3	=BETA.INV(0.5,1,2,1,2) = 1.293
4	=BETA.INV(0.5,1,-2,1,2) = #NUM!
5	=BETA.INV(0,8,10,1,3) = #NUM!
6	=BETA.INV(1,8,10,1,3) = #NUM!
7	=BETA.INV("some text",8,10,1,3) = #VALUE!