Returns the inverse of the normal cumulative distribution.
NORMINV(Number; Mean; StDev)
Number represents the probability value used to determine the inverse normal distribution.
Mean represents the mean value in the normal distribution.
StDev represents the standard deviation of the normal distribution.
=NORMINV(0.9;63;5) returns 69.41. If the average egg weighs 63 grams with a standard deviation of 5, then there will be 90% probability that the egg will not be heavier than 69.41g grams.