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EXCEL LOGNORM.INV FUNCTION
Excel LOGNORM.INV Function Introduction
For a given probability, the Excel LOGNORM.INV function computes the inverse of the Cumulative Log-Normal Distribution Function of x.
Description of Excel LOGNORM.INV Function
Syntax :
=LOGNORM.INV( probability, mean, standard_dev )
Parameters :
- The Following perameter are:
Probability –
- The value at which the inverse function should be evaluated.
mean –
- ln’s arithmetic mean (x).
standard dev –
- The ln standard deviation (x).
Step By Step Guide of LOGNORM.INV Function
Example :
The Inverse Log-Normal Cumulative Distribution Function for a variable x is depicted in the chart on the right. ln(x) has a mean of 2 and a standard deviation of 0.2.
If you wish to determine the value of x with a probability of 0.3, use the Excel Lognorm.Inv function, as shown below:
Key Points
- #NUM! – Occurs if any of the following conditions are met: the supplied probability argument is 0 or 1; the supplied standard dev argument is 0.
- #VALUE! – This error occurs if any of the supplied parameters is not a number.
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