BETADIST

See Also

Returns the cumulative beta probability density function. The cumulative beta probability density 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.

Syntax

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

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

Alpha is a parameter to the distribution.

Beta is a parameter to the distribution.

A is an optional lower bound to the interval of x.

B is an optional 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.

Example

The example may be easier to understand if you copy it to a blank spreadsheet.

How?

Create a blank spreadsheet.
Select the example in the Help topic.

Selecting an example from Help
Press CTRL+C.
In the spreadsheet, select cell A1, and press CTRL+V.
To switch between viewing the formula that returns the result and the result in the cell, select the cell and press F2 and then ENTER, or click Commands and Options on the spreadsheet toolbar, click the Formula tab, and look in the Formula in active cell (active cell) box.

Data Description

2 Value at which to evaluate the function

8 Parameter to the distribution

10 Parameter to the distribution

1 Lower bound

3 Upper bound

Formula Description (Result)

=BETADIST(A2,A3,A4,A5,A6) Cumulative beta probability density function, for the above parameters (0.685470581)

Data	Description
2	Value at which to evaluate the function
8	Parameter to the distribution
10	Parameter to the distribution
1	Lower bound
3	Upper bound
Formula	Description (Result)
=BETADIST(A2,A3,A4,A5,A6)	Cumulative beta probability density function, for the above parameters (0.685470581)