Excel LOGNORM.INV Function
The LOGNORM.INV function returns the inverse lognormal distribution for a given value of x. We can use the lognormal distribution to analyze data that has been logarithmically transformed.
The LOGNORM.INV function returns a numeric value.
- The LOGNORM.INV function was newly introduced In Excel 2010, so it is unavailable in earlier versions.
- The #VALUE! error value occurs if any of the supplied arguments is non-numeric.
- The #NUM! error value occurs if if any of the below situation occurs:
- The supplied probability is ≤ 0 or ≥ 1;
- The supplied standard_dev ≤ 0.
- The LOGNORM.INV function returns the inverse of the cumulative lognormal distribution of x in the LOGNORM.DIST function. It means that if the value of possibility in LOGNORM.INV equals to result of LOGNORM.DIST(x, mean, standard_dev, cumulative), then the result of LOGNORM.INV(probability, mean, standard_dev) equals to the value of x in LOGNORM.DIST.
As the below screenshot shows, there lists the values of probability, mean, and standard_dev parameters, to get the inverse of the cumulative lognormal distribution, please do as follows:
Please copy the formula below into cell F4, then press the Enter key to get the result.
- To show you the relationship between LOGNORM.INV and LOGNORM.DIST, the probability in the data above is the result of the LOGNORM.DIST function.
You can clearly see that when probability = LOGNORM.DIST(x,...), then LOGNORM.INV(probability,...) = x.
- We can also directly input values in the formula. The formula in cell F4 can be changed to:
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