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NORMINV function and ways to use
Objective : Returns the inverse of the normal cumulative
distribution for the specified mean and standard deviation.
Important This
function has been replaced with one or more new functions that may provide
improved accuracy and whose names better reflect their usage. This function is
still available for compatibility with earlier versions of Excel. However, if
backward compatibility is not required, you should consider using the new
functions from now on, because they more accurately describe their
functionality.
Syntax
NORMINV(probability,mean,standard_dev) The NORMINV function
syntax has the following arguments (argument: A value that provides information
to an action, an event, a method, a property, a function, or a procedure.):
Probability
Required. A probability corresponding to the normal distribution.
Mean Required. The
arithmetic mean of the distribution.
Standard_dev Required.
The standard deviation of the distribution.
Remarks
If any argument is nonnumeric, NORMINV returns the #VALUE!
error value.
If probability <= 0 or if probability >= 1, NORMINV
returns the #NUM! error value.
If standard_dev ≤ 0, NORMINV returns the #NUM! error value.
If mean = 0 and standard_dev = 1, NORMINV uses the standard
normal distribution (see NORMSINV).
Given a value for probability, NORMINV seeks that value x
such that NORMDIST(x, mean, standard_dev, TRUE) = probability. Thus, precision
of NORMINV depends on precision of NORMDIST. NORMINV uses an iterative search
technique. If the search has not converged after 100 iterations, the function
returns the #N/A error value.
Example
