BETAINV
Returns the inverse of the cumulative beta probability density function for a specified beta distribution (BETADIST).
Syntax
expression.BETAINV(arg1, arg2, arg3, arg4, arg5);
expression - A variable that represents a ApiWorksheetFunction class.
Parameters
| Name | Required/Optional | Data type | Default | Description |
|---|---|---|---|---|
| arg1 | Required | ApiRange | ApiName | number | A probability associated with the beta distribution. | |
| arg2 | Required | ApiRange | ApiName | number | The alpha parameter of the distribution which must be greater than 0. | |
| arg3 | Required | ApiRange | ApiName | number | The beta parameter of the distribution which must be greater than 0. | |
| arg4 | Optional | ApiRange | ApiName | number | An optional lower bound to the interval of x (A). If omitted, it is equal to 0. | |
| arg5 | Optional | ApiRange | ApiName | number | An optional upper bound to the interval of x (B). If omitted, it is equal to 1. |
Returns
number
Example
Find the value corresponding to a specific probability in the beta distribution in a spreadsheet.
// How do I locate the data point that matches a given probability level in a spreadsheet?
// Reverse-calculate from probability to the original data value in a spreadsheet.
let worksheet = Api.GetActiveSheet();
let func = Api.WorksheetFunction;
worksheet.GetRange("A1").SetValue(func.BETAINV(0.2, 4, 5));