# EXPON.DIST

Formulas / EXPON.DIST
Calculate the exponential distribution.
`EXPONDIST(x,lambda,cumulative)`
• x - required argument that is the value of the function
• lambda - required argument that is the parameter value
• cumulative - required argument that indicates which form of the exponential function to use

## Examples

• `=EXPONDIST( 0.5, 1, FALSE )`

The EXPON.DIST function is used to calculate the probability density function (PDF) for the exponential distribution. For example, the formula returns the probability density value of 0.60653066, which is the PDF of the exponential distribution with Î» = 0.5 and x = 0.5.

• `=EXPONDIST( 0.5, 1, TRUE )`

The EXPON.DIST function can also be used to calculate the cumulative distribution function (CDF) for the exponential distribution. For example, the formula returns the cumulative distribution value of 0.39346934, which is the CDF of the exponential distribution with Î» = 0.5 and x = 0.5.

## Summary

The EXPON.DIST function returns the exponential distribution, allowing users to calculate the probability of a given event occurring.

• The EXPON.DIST function in Sourcetable can be used to model the time between events as it calculates an exponential distribution.