BETA.DIST function

The BETA.DIST function returns the probability of a given value as defined by the beta distribution function.

Parts of a BETA.DIST function

BETA.DIST(value, alpha, beta, lower_bound, upper_bound)

Part	Description	Notes
value	The value at which to evaluate the probability function.	The given value must be a number from the given lower boundary to the given upper boundary.
alpha	The first shape parameter of the distribution.	The given alpha must be a positive number.
beta	The second shape parameter of the distribution.	The given beta must be a positive number.
lower_bound	The lower boundary of the function.	The default lower boundary is 0.
upper-bound	The upper boundary of the function.	The default upper boundary is 1.

Sample formulas

BETA.DIST(0.65, 1.234, 7, 0.5, 3)

BETA.DIST(0.42, 3, 8)

BETA.DIST(0.92, 0.5, 0.7)

BETA.DIST(A5, 0.5, 0.7, -1, 1)

Note

• You can use BETADIST or BETA.DIST to perform this function.

Example

In this example, the cumulative probability of beta distribution at 0.3 is parameterized by an alpha of 5 and a beta of 1, defined over [-1, 1]:

	A	B	C	D	E	F
1	Value	Alpha	Beta	Lower bound	Upper bound	Solution
2	0.3	5	1	-1	1	0.1160290625
3	0.3	5	1	-1	1	=BETA.DIST(0.3, 5, 1, -1, 1)
4	0.3	5	1	-1	1	=BETA.DIST(A4, B4, C4, D4, E4)

Related function

BETAINV: The BETA.INV function returns the value of the inverse beta distribution function for a given probability.