The BETA.DIST function is commonly used to study variation in the percentage of something across samples, such as the fraction of the day people spend watching television.
Purpose of Excel BETA.DIST Function
BETA.DIST function calculates the cumulative beta probability density function for a supplied set of parameters.
Return value
BETA.DIST function returns the cumulative beta probability density function.
Syntax
=BETADIST(x,alpha,beta,[A],[B])
Arguments
| Arguments | Description | Remarks |
| X | The value between A and B at which to evaluate the function. | Mandatory |
| Alpha | A parameter of the distribution. | Mandatory |
| Beta | A parameter of the distribution. | Mandatory |
| A | A lower bound to the interval of x. | Optional |
| B | A upper bound to the interval of x. | Optional |
Usage notes
- If any argument is non-numeric, BETA.DIST returns the #VALUE! error value.
- If alpha ≤ 0 or beta ≤ 0, BETA.DIST returns the #NUM! error value.
- If probability ≤ 0 or probability > 1, BETADIST returns the #NUM! error value.
- If x < A, x > B, or A = B, BETADIST returns the #NUM! error value.If you omit values for A and B, BETA.DIST uses the standard cumulative beta distribution, so that A = 0 and B = 1.
Availability
Since 2007 for Windows.
Since 2011 for Mac.