# 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.