The NORMINV function returns the inverse of the normal cumulative distribution. @p is the given probability corresponding to the normal distribution, @mean is the arithmetic mean of the distribution, and @stdev is the standard deviation of the distribution. NORMINV uses an iterative algorithm for calculating the result. If NORMINV does not converge (accuracy within +/- 3x10^7) after 100 iterations, the function returns #N/A! error.
If @p < 0 or @p > 1 or @stdev <= 0 NORMINV returns #NUM! error.