GAMMAINV
function GAMMAINV(arg1: number = null, arg2: number = null, arg3: number = null): numberDescription
Returns the inverse of the gamma cumulative distribution: if p = GAMMADIST(x,...), then GAMMAINV(p,...) = x.
Parameters
- arg1
numberdefault: null The probability associated with the gamma distribution, a number between 0 and 1, inclusive.
- arg2
numberdefault: null The alpha parameter of the distribution, a positive number.
- arg3
numberdefault: null The beta parameter of the distribution, a positive number. If this parameter is equal to 1, the function returns the standard gamma distribution.
Returns
numberTry It
var oWorksheet = Api.GetActiveSheet();
var oFunction = Api.GetWorksheetFunction();
var ans = oFunction.GAMMAINV(0.4, 9, 2);
oWorksheet.GetRange("B2").SetValue(ans);