# Manuals/calci/LOGNORMDIST

LOGNORMDIST(Number,Mean,StandardDeviation,Accuracy)

• is the value.
• is the mean value of ,
• is the standard deviation value of .
• is correct decimal places for the result.
• LOGNORMDIST(), returns the cumulative lognormal distribution.

## Description

• This function gives the value of the cumulative log normal distribution.
• This distribution is the continuous probability distribution.
• Lognomal distribution is also called Galton's distribution.
• A random variable which is log-normally distributed takes only positive real values.
• Suppose is Normally Distributed function, then also Normally Distributed
• also Normally Distributed.
• Let the Normal Distribution function and its Mean= , Standard Deviation =
• Then the lognormal cumulative distribution is calculated by:

where is the error function,. The error function (also called the Gauss error function) is a special function of sigmoid shape which occurs in probability, statistics and partial differential equations.

• And is the Cumulative Distribution function of the Standard Normal distribution.
• This function will give the result as error when
1. Any one of the argument is non-numeric.
2. Suppose  or


## ZOS

• The syntax is to calculate cumulative log normal distribution in ZOS is .
• is the value.
• is the mean value of .
• is the standard deviation value of .
• For e.g.,LOGNORMDIST(10,8.002,4.501)
Log Normal Distribution

## Examples

1. =LOGNORMDIST(2,5.4,2.76) = 0.044061652
2. =LOGNORMDIST(10,24.05,12.95) = 0.046543186
3. =LOGNORMDIST(50,87.0036,42.9784) = 0.026597569
4. =LOGNORMDIST(-10,5,2) = #N/A (NUMBER GREATER THAN (OR) NOT EQUAL TO 0)

## Related Videos

Lognormal Distribution