Excel - EXPONDIST Function



EXPONDIST Function

One of the most crucial Excel statistical functions is the EXPONDIST function, which retrieves the exponential distribution. It is used to predict the time of certain events and determine the cumulative probability function or probability density function. The tremendous benefits of employing the EXPONDIST function are scheduling time and allocating tasks among various projects, risk analysis, predicting the time during the diagnosis of certain diseases, electronic telecommunication, etc.

The EXPONDIST function appended in Excel 2013 interchanges the EXPON.DIST function in Excel 2010.

Compatibility

This advanced Excel function is compatible with the following versions of MS-Excel −

  • Excel for Microsoft 365
  • Excel for Microsoft 365 for Mac
  • Excel for the web
  • Excel 2021
  • Excel 2021 for Mac
  • Excel 2019
  • Excel 2019 for Mac
  • Excel 2016

Syntax

The syntax of EXPONDIST function is as follows −

EXPONDIST(x,lambda,cumulative)

Arguments

You can use the following arguments with the EXPONDIST function −

Argument Description Required / Optional
X It specifies the numeric function value. Required
Lambda It represents another numeric value.
Cumulative A logical value which can be true or false. If this argument is TRUE, EXPONDIST retrieves the cumulative distribution function. If this argument is FALSE, this function retrieves the probability density function. Required

Points to Remember

  • If any arguments except the Cumulative contain the non-numeric value, then the EXPONDIST function receives the #VALUE! error.
  • If the value of x is negative, then EXPONDIST receives the #NUM! error.
  • If the lambda value is less than and equal to zero, then EXPONDIST returns the #NUM! Error value.

Examples of EXPONDIST Function

Practice the following examples to learn the use of the EXPONDIST function in Excel.

Example 1

First, you may enter the x, Lambda, and Cumulative corresponding values in the cell range C3:C5. Write the formula =EXPONDIST(C3,C4,C5) in the C6 cell. You may set the Cumulative value to FALSE to get the Probability Density Function.

Excel EXPONDIST Function 1

After that, press the Enter tab to get the Exponential distribution value.

Excel EXPONDIST Function 2

You may set the Cumulative argument to True and press Enter to get the cumulative distribution function. Type the formula =EXPOSDIST(C3,C4,C5) in the C6 and press the Enter tab to get the resulting value.

Excel EXPONDIST Function 3

Example 2

If any arguments except the cumulative contain the non-numeric value, then the EXPONDIST function receives the #VALUE! error.

Solution

You can enter the formula =EXPONDIST("Stats","45", FALSE) in the B9 cell. Here, you can see in the expression that the x value(first argument) is non-numeric. Once you press the Enter tab, the function obtains the #VALUE! Error.

Excel EXPONDIST Function 4

Excel EXPONDIST Function 5

Example 3

If the value of x is negative, then EXPONDIST receives the #NUM! error.

Solution

Write the formula =EXPONDIST(-8,45, FALSE) in the B9 cell and press Enter. Here, the first argument, x, contains the negative value -8 and is not allowed.

Excel EXPONDIST Function 6

Therefore, the resulting value is #NUM! in the B9 cell.

Excel EXPONDIST Function 7

Example 4

If the lambda value is less than and equal to zero, then EXPONDIST returns the #NUM! Error value.

Solution

Lets suppose the lambda(second argument) is equal to 0. Write the formula =EXPONDIST(54,0, TRUE) in the desired cell and press the Enter tab.

Excel EXPONDIST Function 8

As you can notice in this example, the lambda value is set to 0, so the EXPONDIST function will generate #NUM! error.

Excel EXPONDIST Function 9
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