Compatibility
Excel 2007 (Compatibility)
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=CHIDIST()
Returns the right-tailed probability of the chi-squared distribution. The χ2 distribution is associated with a χ2 test. Use the χ2 test to compare observed and expected values. For example, a genetic experiment might hypothesize that the next generation of plants will exhibit a certain set of colors. By comparing the observed results with the expected ones, you can decide whether your original hypothesis is valid. This function is provided for backward compatibility; consider using the CHISQ.DIST.RT function instead.
Applies To:
Excel for Microsoft 365Excel for Microsoft 365 for MacExcel 2024Excel 2024 for MacExcel 2021Excel 2021 for MacExcel 2019Excel 2016
=CHIDIST(x,deg_freedom)
Hover argument names in the table for details.
Output typeNumber
Popularity20 / 100
VolatileNo
Dynamic ArrayNo
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◧ Arguments
| Argument | Type | Required | Description |
|---|---|---|---|
x |
Number | Required | The value at which you want to evaluate the distribution. |
deg_freedom |
Number | Required | The number of degrees of freedom. |
▣ Examples
▦ Data
| Cell | Value | Description |
|---|---|---|
A2 |
18.307 | Value at which you want to evaluate the distribution |
A3 |
10 | Degrees of freedom |
A4 |
18.307 | Value at which you want to evaluate the distribution |
A5 |
10 | Degrees of freedom |
One-tailed probability of the chi-squared distribution, for the arguments specified in A2 and A3.
=CHIDIST(A2,A3)
Result:
0.0500006
§ Remarks
- If either argument is nonnumeric, CHIDIST returns the #VALUE! error value.
- If x is negative, CHIDIST returns the #NUM! error value.
- If deg_freedom is not an integer, it is truncated.
- If deg_freedom < 1 or deg_freedom > 10^10, CHIDIST returns the #NUM! error value.
- CHIDIST is calculated as CHIDIST = P(X>x), where X is a χ2 random variable.
✦ 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. For more information about the new functions, see CHISQ.DIST function and CHISQ.DIST.RT function.
- If deg_freedom is not an integer, it is truncated.
- CHIDIST is calculated as CHIDIST = P(X>x), where X is a χ2 random variable.
⚠ Common Errors
#VALUE!
If either argument is nonnumeric, CHIDIST returns the #VALUE! error value.
Fix: برای هر دو آرگومان مقدار عددی وارد کنید.
#NUM!
If x is negative, CHIDIST returns the #NUM! error value. If deg_freedom < 1 or deg_freedom > 10^10, CHIDIST returns the #NUM! error value.
Fix: Allowed values
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