Calculates the inverse of the NORMSDIST function.
Syntax:
NORMSINV(p)
NORMSINV returns the value x, such that NORMSDIST(x) is p.
It is equivalent to NORMINV(p, 0, 1).
Example:
NORMSINV(0.5)
returns 0. Half of the standard normal distribution is below 0.
NORMINV(0.5, 0, 1)
also returns 0.