Formulas and functions > Functions from A to Z > NORMINV (percentiles of the normal distribution)

Note: NORMINV is supplemented by the new identical function NORM.INV, which is available in newer versions of Microsoft Excel (2010 or later).

Syntax:

NORMINV(Probability, Mean, StdDev)

Description:

Returns the inverse of the normal cumulative distribution function NORMDIST.

Probability is the probability to be evaluated. Must be in the range 0 to 1.

Mean is the arithmetic mean of the distribution.

StdDev is the standard deviation of the distribution. Must be > 0.

Note:

The result of this function is calculated using an iterative search technique. If PlanMaker does not find a result after 100 iterations that deviates less than ±3x10^-7 from Probability, it displays the error value #N/A and aborts the approximation.