# BETA.DIST

BETA.DIST(x, alpha, beta, cumulative [,A] [,B])

Returns the probability of getting a specific value between 0 and 1 for different distribution shapes.

 x The number between A and B from the distribution. alpha The first parameter. beta The second parameter. cumulative A logical value indicating the type of function to use:False (or 0) = [[probability distribution function]] (equal to)True (<> 0) = [[cumulative probability function]] (equal to or less than) A (Optional) The lower bound to the interval of x (0..1) (0) B (Optional) The upper bound to the interval of x (0..1) (1)

 REMARKS
 * This function was added in Excel 2010 to replace the BETADIST function and include an option for probability distribution.* For an illustrated example refer to the page under [[Distributions]]* The beta distribution is a [[continuous distribution]]* This function is a two variable function.* If "alpha" = "beta", the distribution is symmetrical.* If "alpha" = 1 and "beta" > 1, the distribution is J-shaped.* If "alpha" > 1 and "beta" = 1, the distribution is J-shaped.* If "alpha" < "beta", the distribution is said to be positively skewed (most of the values are near the minimum value).* If "alpha" > "beta", the distribution is negatively skewed (most of the values are near the maximum value).* If "cumulative" = False, then the height of the curve at "x" is returned.* If "cumulative" = True, then the area under the curve to the left of "x" is returned.* If "A" is left blank, then 0 is used.* If "B" is left blank, then 1 is used.* You can use the BETA.INV function to return the inverse of the cumulative probability function for a beta distribution.* You can use the GAMMA.DIST function to return the probability function OR the cumulative probability function for a gamma distribution.* For the Microsoft documentation refer to support.microsoft.com* For the Google documentation refer to support.google.com

 A 1 =BETA.DIST(2, 8, 10, TRUE, 1, 3) = 0.685 2 =BETA.DIST(-2, 8, 10, TRUE, -5, 3) = 0.282 3 =BETA.DIST(3, 1, 1, TRUE, 2, 3) = 1 4 =BETA.DIST(3, 1, 1, TRUE, , 3) = 1 5 =BETA.DIST(3, -1, 1, TRUE, 2, 2) = #NUM! 6 =BETA.DIST(3, 1, 1, TRUE, 2, ) = #NUM! 7 =BETA.DIST(3, 1, -1, TRUE, 2, 2) = #NUM! 8 =BETA.DIST(3, 1, 1, TRUE, 2, 2) = #NUM! 9 =BETA.DIST(3, 1, 1, TRUE, 2, "some text") = #VALUE!