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WorksheetFunction.Expon_Dist Method (Excel)

Returns the exponential distribution. Use EXPON_DIST to model the time between events, such as how long an automated bank teller takes to deliver cash. For example, you can use EXPON_DIST to determine the probability that the process takes at most 1 minute.

Version Added: Excel 2010

expression .Expon_Dist(Arg1, Arg2, Arg3)

expression A variable that represents a WorksheetFunction object.

Parameters

Name

Required/Optional

Data Type

Description

Arg1

Required

Double

X - the value of the function.

Arg2

Required

Double

Lambda - the parameter value.

Arg3

Required

Boolean

Cumulative - a logical value that indicates which form of the exponential function to provide. If cumulative is TRUE, EXPONDIST returns the cumulative distribution function; if FALSE, it returns the probability density function.

Return Value

Double

  • If x or lambda is nonnumeric, EXPON_DIST returns the #VALUE! error value.

  • 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: awfxpnd1_ZA06051267

  • The equation for the cumulative distribution function is: awfxpnd2_ZA06051268

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