CHIDIST(x, degrees_freedom)

Returns the probability of getting less than or equal to a particular value in a chi-squared distribution (right tailed).

xThe number from the distribution.
degrees_freedomThe number of degrees of freedom.

Remarks

* CHISQ.DIST.RT was added in Excel 2010 to replace this function.
* The chi-squared distribution is a continuous distribution.
* If "x" < 0, then #NUM! is returned.
* If "x" is not numeric, then #VALUE! is returned.
* If "degrees_freedom" is not an integer, it is truncated.
* If "degrees_freedom" < 1, then #NUM! is returned.
* If "degrees_freedom" = 10^10, then #NUM! is returned.
* If "degrees_freedom" is not numeric, then #VALUE! is returned.
* All the values are greater than zero.
* This function uses the following formula P(X>x), where X is a ?2 random variable ???
* For the Microsoft documentation refer to support.office.com

 A
1=CHIDIST(18.307,10) = 0.050
2=CHIDIST(2,2) = 0.37
3=CHIDIST(-1,2) = #NUM!
4=CHIDIST(15,"some text") = #VALUE!
5=CHIDIST("some text",2) = #VALUE!


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