## How does the EXPON.DIST function (DAX) work?

The EXPON.DIST function (DAX) returns the exponential distribution.

## EXPON.DIST Formula Syntax

EXPON.DIST(
x,lambda,cumulative
)

## How do you use the EXPON.DIST function?

Use EXPON.DIST function to model the time between events, such as how long an automated bank teller takes to deliver cash.

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## Considerations when using the EXPON.DIST function

If x or lambda is nonnumeric, EXPON.DIST returns the #VALUE! error value.

If x or lambda is not an integer, it is rounded.

If x < 0, EXPON.DIST returns the #NUM! error value.

If lambda ≤ 0, EXPON.DIST returns the #NUM! error value.

The equation for the probability density function is:

The equation for the cumulative distribution function is:

## Formula examples using the EXPON.DIST function

=EXPONDIST( 0.5, 1, FALSE )

=EXPON.DIST(0.2,10,FALSE)

=EXPON.DIST(A2,A3,TRUE)

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