NORMINV - script and chart function

NORMINV() returns the inverse of the normal cumulative distribution for the specified mean and standard deviation.

Syntax:  

NORMINV(prob, mean, standard_dev)

Return data type: number

Arguments:  

Argument Description
prob A probability associated with the normal distribution. It must be a number between 0 and 1.
mean A value stating the arithmetic mean for the distribution.
standard_dev A positive value stating the standard deviation of the distribution.

This function is related to the NORMDIST function in the following way:
If prob = NORMDIST(value, m, sd), then NORMINV(prob, m, sd) = value

Limitations:  

All arguments must be numeric, else NULL will be returned.