WorksheetFunction.NormInv Method
Returns the inverse of the normal cumulative distribution for the specified mean and standard deviation.
Syntax
expression.NormInv(Arg1, Arg2, Arg3)
expression A variable that represents a WorksheetFunction object.
Parameters
| Name | Required/Optional | Data Type | Description |
|---|---|---|---|
| Arg1 | Required | Double | Probability - a probability corresponding to the normal distribution. |
| Arg2 | Required | Double | Mean - the arithmetic mean of the distribution. |
| Arg3 | Required | Double | Standard_dev - the standard deviation of the distribution. |
Return Value
Double
Remarks
- If any argument is nonnumeric, NORMINV returns the #VALUE! error value.
- If probability < 0 or if probability > 1, NORMINV returns the #NUM! error value.
- If standard_dev ≤ 0, NORMINV returns the #NUM! error value.
- If mean = 0 and standard_dev = 1, NORMINV uses the standard normal distribution (see NORMSINV).
Given a value for probability, NORMINV seeks that value x such that NORMDIST(x, mean, standard_dev, TRUE) = probability. Thus, precision of NORMINV depends on precision of NORMDIST. NORMINV uses an iterative search technique. If the search has not converged after 100 iterations, the function returns the #N/A error value.