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WorksheetFunction.ExponDist Method

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Excel Developer Reference

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

Syntax

expression.ExponDist(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

Remarks

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

  • If x < 0, EXPONDIST returns the #NUM! error value.

  • If lambda ≤ 0, EXPONDIST returns the #NUM! error value.

  • The equation for the probability density function is:

    Equation

  • The equation for the cumulative distribution function is:

    Equation

See Also