Formulas > =LOGNORMDIST()

# How To Use LOGNORMDIST() Function in Google Sheets

Description

Returns the value of the log-normal cumulative distribution with given mean and standard deviation at a specified value.

Common questions about the LOGNORMDIST formula:
• What parameters does it require?
• Can it be used for continuous distributions?
• What should be the probability input if the third and fourth parameters are the mean and standard deviation?

How can the LOGNORMDIST formula be used appropriately:
The LOGNORMDIST formula can be used to calculate the logarithmic cumulative distribution of a given probability over a normal distribution range. It requires four parameters to calculate the probability: X, mean, standard deviation, and true/false. X is the value in the distribution range for which to calculate the cumulative probability, the mean and the standard deviation are the parameters describing the normal distribution, and true/false will determine if the cumulative probability should be calculated from negative infinity or not.

How can the LOGNORMDIST formula be commonly mistyped:
The LOGNORMDIST formula is commonly mistyped as LOGORMDIST or LONGNORMDIST. Other common misspellings are LOGNORMDITS, LOGNORMDST, LOGONRMDIST, LOGNRMDIST.

What are some common ways the LOGNORMDIST formula is used inappropriately:
The LOGNORMDIST formula should not be used to calculate probabilities for non-normal distribution data. It should also not be used to calculate probabilities for a skewed or t-distribution.

What are some common pitfalls when using the LOGNORMDIST formula:
• Incorrect parameters are used
• The true/false parameter is not set correctly
• Incorrect data type is used

What are common mistakes when using the LOGNORMDIST Formula:
• Incorrect parameters are entered
• The formula is misused to calculate probabilities for non-normal distributions
• The formula is misused to calculate probabilities for skewed or t-distributions

What are common misconceptions people might have with the LOGNORMDIST Formula:
• That it can be used for non-normal distributions
• That it can accurately calculate probabilities for data with skewed distributions
• That it somehow calculates the probability for a range instead of a single value

How To Actually Use LOGNORMDIST() in Sheets

`LOGNORMDIST(x, mean, standard_deviation)`

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Google Sheets LOGNORMDIST Log Normal Cumulative Distribution Function NORMSDIST

This video shows the trend line LOGNORMDIST and the use of NORMSDIST and LN to generate the same trend line and data set.

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