EXCEL NORM.INV FUNCTION

The NORM.INV function in Excel calculates the inversion of the Continuous Normal Density Function for a given x value and a given distribution mean and standard deviation.

Syntax :

=NORM.INV( probabilitymeanstandard_dev )

Parameters :

  • The followng parameter are:

Probability –

  • The value at which the inverse function should be evaluated.

mean –

  • The distribution’s arithmetic mean.

standard dev –

  • The tarball standard deviation.

Step By Step Guide of NORM.INV Function

Example :

The Inverse Normal Cumulative Density Function with a Mean of 5 and a Standard Deviation of 2 is seen on the right.
If you wish to determine the value of this function when the probability is equal to 0.6, use the Excel Norm.Inv function, as shown below:

  • #NUM! – Occurs when either the specified probability argument is 0 or more than 1, or the supplied standard dev parameter is 0.
  • #VALUE! – This error occurs if any of the supplied parameters is not a number.

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