CHISQ.DIST.RT function

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.



The CHISQ.DIST.RT function syntax has the following arguments:

  • X     Required. The value at which you want to evaluate the distribution.

  • Deg_freedom     Required. The number of degrees of freedom.


  • If either argument is nonnumeric, CHISQ.DIST.RT function returns the #VALUE! error value.

  • If any argument is nonnumeric, CHISQ.DIST.RT function returns the #VALUE! error value.

  • If deg_freedom is not an integer, it is truncated.

  • If deg_freedom < 1 or deg_freedom > 10^10, CHISQ.DIST.RT returns the #NUM! error value.


Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data.




Value at which you want to evaluate the distribution


Degrees of freedom





One-tailed probability of the chi-squared distribution, for the arguments specified in A2 and A3.


Applies To: Excel 2016 for Mac, Excel 2016, Excel Starter, Excel 2010, Excel Online, Excel 2013, Excel for Mac 2011

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