LOGINV function

This article describes the formula syntax and usage of the LOGINVfunction in Microsoft Excel.

Description

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)

The LOGINV function syntax has the following arguments:

  • Probability    Required. A probability associated with the lognormal distribution.

  • Mean    Required. The mean of ln(x).

  • Standard_dev    Required. 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:

    Equation

Example

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

How do I copy an example?

  1. Select the example in this article.

    Important   Do not select the row or column headers.

    selecting an example from help

    Selecting an example from Help

  2. Press CTRL+C.

  3. In Excel, create a blank workbook or worksheet.

  4. In the worksheet, select cell A1, and press CTRL+V.

    Important   For the example to work properly, you must paste it into cell A1 of the worksheet.

  5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

After you copy the example to a blank worksheet, you can adapt it to suit your needs.

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A

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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 (4.000025)

Applies To: Excel 2010, Excel Starter, Excel Online, SharePoint Online



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