Compatibility
Excel 2007 (Compatibility)
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=EXPONDIST()
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.
Applies To:
Excel for Microsoft 365Excel for Microsoft 365 for MacExcel 2024Excel 2024 for MacExcel 2021Excel 2021 for MacExcel 2019Excel 2016
=EXPONDIST(x,lambda,cumulative)
Hover argument names in the table for details.
Output typeNumber
Popularity14 / 100
VolatileNo
Dynamic ArrayNo
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◧ Arguments
| Argument | Type | Required | Description |
|---|---|---|---|
x |
Number | Required | The value of the function. |
lambda |
Number | Required | The parameter value. |
cumulative |
Logical | Required | 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. |
▣ Examples
▦ Data
| Cell | Value | Description |
|---|---|---|
A2 |
0.2 | Value of the function |
A3 |
10 | Parameter value |
A4 |
0.2 | Value of the function |
A5 |
10 | Parameter value |
Cumulative exponential distribution function
=EXPONDIST(A2,A3,TRUE)
Result:
0.86466472
Probability exponential distribution function
=EXPONDIST(0.2,10,FALSE)
Result:
1.35335283
§ 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:
- The equation for the cumulative distribution function is:
✦ Tips
- This function has been replaced with one or more new functions that may provide improved accuracy and whose names better reflect their usage. Although this function is still available for backward compatibility, you should consider using the new functions from now on, because this function may not be available in future versions of Excel.
- The equation for the probability density function is:
- The equation for the cumulative distribution function is:
⚠ Common Errors
#VALUE!
If x or lambda is nonnumeric, EXPONDIST returns the #VALUE! error value.
Fix: برای x و lambda مقدار عددی وارد کنید و ورودیهای متنی را اصلاح کنید.
#NUM!
If x < 0, EXPONDIST returns the #NUM! error value. If lambda ≤ 0, EXPONDIST returns the #NUM! error value.
Fix: Enter allowed values
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