BETA.INV function: Description, Usage, Syntax, Examples and Explanation

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.