BETA.INV function: Description, Usage, Syntax, Examples and Explanation
What is BETA.INV function in Excel?
Syntax of BETA.INV function
BETA.INV(probability,alpha,beta,[A],[B])
The BETA.INV function syntax has the following arguments:
- Probability Required. A probability associated with the beta distribution.
- Alpha Required. A parameter of the distribution.
- Beta Required. A parameter the distribution.
- A Optional. A lower bound to the interval of x.
- B Optional. An upper bound to the interval of x.
BETA.INV formula explanation
- If any argument is nonnumeric, BETA.INV returns the #VALUE! error value.
- If alpha ≤ 0 or beta ≤ 0, BETA.INV returns the #NUM! error value.
- If probability ≤ 0 or probability > 1, BETA.INV returns the #NUM! error value.
- If you omit values for A and B, BETA.INV uses the standard cumulative beta distribution, so that A = 0 and B = 1.
Given a value for probability, BETA.INV seeks that value x such that BETA.DIST(x, alpha, beta, TRUE, A, B) = probability. Thus, precision of BETA.INV depends on precision of BETA.DIST.
Example of BETA.INV function
Steps to follow:
1. Open a new Excel worksheet.
2. Copy data in the following table below and paste it in cell A1
Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.
You can adjust the column widths to see all the data, if need be.
Data | Description | |
0.685470581 | Probability associated with the beta distribution | |
8 | Parameter of the distribution | |
10 | Parameter of the distribution | |
1 | Lower bound | |
3 | Upper bound | |
Formula | Description | Result |
=BETA.INV(A2,A3,A4,A5,A6) | Inverse of the cumulative beta probability density function for the parameters above. | 2 |