Excel LOGNORMDIST Function
The LOGNORMDIST function returns the cumulative lognormal distribution for a given value of x. We can use this function to analyze data that has been logarithmically transformed.
Syntax
=LOGNORMDIST(x, mean, standard_dev)
Arguments
- x (required): The value at which to evaluate the lognormal distribution.
- mean (required): The arithmetic value of the mean of ln(x).
- standard_dev (required): The value of the standard deviation of ln(x).</li
Return Value
The LOGNORMDIST function returns a numeric value.
Function Notes
- LOGNORMDIST returns the #VALUE! error value if any argument is non-numeric.
- LOGNORMDIST returns the #NUM! error value if:
- x ≤ 0.
- standard_dev ≤ 0.
Example
To calculate the cumulative lognormal distribution at 7 with the given mean, and standard deviation as shown in the table below, please copy or enter the below formula in the result cell (D6), and press Enter to get the result.
=LOGNORMDIST(B6,B9,B12)
Also, you can type the actual x, mean, and standard_dev values in the formula as shown below.
=LOGNORMDIST(7,2,1)
Related functions
The LOGNORM.DIST function calculates the lognormal distribution for a given value of x. We can use this function to analyze data that has been logarithmically transformed.
The Excel WEIBULL.DIST function returns the Weibull probability density function or Weibull cumulative distribution for a supplied set of parameters. It is frequently used for reliability analysis, e.g., for testing the mean time of the failure of an equipment in a specific time range.
The Excel POISSON.DIST function returns the Poisson distribution which is used to predict the number of events occurring over a specific time, e.g., the number of people arriving at the market in 10 minutes.
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