# BETADIST

### Definiton

Returns the cumulative beta probability density function. The beta distribution is commonly used to study variation in the percentage of something across samples, such as the fraction of the day people spend watching television.

### Sample Usage

### Syntax

BETADIST(x,alpha,beta,[A],[B])

The BETADIST function syntax has the following arguments:

X Required. The value between A and B at which to evaluate the function.

Alpha Required. A parameter of the distribution.

Beta Required. A parameter of the distribution.

A Optional. A lower bound to the interval of x.

B Optional. An upper bound to the interval of x.

### Remarks

If any argument is nonnumeric, BETADIST returns the #VALUE! error value.

If alpha ≤ 0 or beta ≤ 0, 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, BETADIST uses the standard cumulative beta distribution, so that A = 0 and B = 1.

### In order to use the BETADIST formula, start with your edited Excellentable:

### Then type in the BETADIST formula in the area you would like to display the outcome:

### By adding the values you would like to calculate the BETADIST formula for, Excellentable will generate the outcome: