CHIDIST

CHIDIST(x, degrees_freedom)

Returns the probability distribution function for a chi-squared distribution (right tailed) (no cumulative).

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

REMARKS
* This function is only available for backwards compatibility and should not be used.
* 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 ???
* You can use the CHISQ.DIST function to return the probability distribution function OR the cumulative probability function for a chi-squared distribution (left tailed).
* You can use the CHISQ.INV function to return the inverse of the probability distribution function for a chi-squared distribution (left tailed).
* You can use the CHISQ.INV.RT function to return the inverse of the probability distribution function for a chi-squared distribution (right tailed) (no cumulative).
* You can use the CHISQ.TEST function to return the probability value from a chi-squared distribution.
* For the Microsoft documentation refer to support.microsoft.com
* For the Google documentation refer to support.google.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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