LOGINV

See Also

Returns the inverse of the lognormal cumulative distribution function of x, where ln(x) is normally distributed with parameters mean and standard_dev. If p = LOGNORMDIST(x,...) then LOGINV(p,...) = x.

Use the lognormal distribution to analyze logarithmically transformed data.

Syntax

LOGINV(probability,mean,standard_dev)

Probability is a probability associated with the lognormal distribution.

Mean is the mean of ln(x).

Standard_dev is the standard deviation of ln(x).

Remarks

If any argument is nonnumeric, LOGINV returns the #VALUE! error value.
If probability < 0 or probability > 1, LOGINV returns the #NUM! error value.
If standard_dev <= 0, LOGINV returns the #NUM! error value.
The inverse of the lognormal distribution function is:

Example

The example may be easier to understand if you copy it to a blank spreadsheet.

How?

Create a blank spreadsheet.
Select the example in the Help topic.

Selecting an example from Help
Press CTRL+C.
In the spreadsheet, select cell A1, and press CTRL+V.
To switch between viewing the formula that returns the result and the result in the cell, select the cell and press F2 and then ENTER, or click Commands and Options on the spreadsheet toolbar, click the Formula tab, and look in the Formula in active cell (active cell) box.

Data	Description
0.039084	Probability associated with the lognormal distribution
3.5	Mean of ln(x)
1.2	Standard deviation of ln(x)
Formula	Description (Result)
=LOGINV(A2, A3, A4)	Inverse of the lognormal cumulative distribution function for the terms above (4.000014)