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LOGNORMDIST

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Returns the cumulative lognormal distribution of x, where ln(x) is normally distributed with the parameters mean and standard_dev. Use this function to analyze data that has been logarithmically transformed.

Syntax

LOGNORMDIST ( x , mean , standard_dev )

x is the value at which to evaluate the function.

Mean is the mean of ln(x).

Standard_dev is the standard deviation of ln(x).

Remarks

  • If any argument is nonnumeric, LOGNORMDIST returns the #VALUE! error value.

  • If x 0 or if standard_dev 0, LOGNORMDIST returns the #NUM! error value.

  • The equation for the lognormal cumulative distribution function is:

    Cc767589.ZA060511791033(en-us,TechNet.10).gif

Example

X

Mean

StdDev

Formula

Description (Result)

4

3.5

1.2

=LOGNORMDIST([X],[Mean],[StdDev])

Cumulative lognormal distribution at 4 with the specified arguments (0.039084)

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