CHIINV(probability, degrees_freedom)

Returns the probability of getting greater than a particular value in a chi-squared distribution (right tailed).


probabilityThe probability associated with the distribution.
degrees_freedomThe number of degrees of freedom.

Remarks

* CHISQ.INV.RT was added in Excel 2010 to replace this function.
* If "probability" < 0, then #NUM! is returned.
* If "probability" > 1, then #NUM! is returned.
* If "probability" 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.
* This function iterates until the result is accurate to within ±3x10^-7.
* If the iterative process does not converge after 100 iterations, then #N/A is returned.
* In Excel 2010 the accuracy of this function was improved.
* For the Microsoft documentation refer to support.office.com

 A
1=CHIINV(0.5,2) = 1.39
2=CHIINV(0.05,10) = 18.307
3=CHIINV(0.05,10^10) = #NUM!
4=CHIINV(1.01,10) = #NUM!
5=CHIINV("some text",10) = #VALUE!
6=CHIINV(0.5,"some text") = #VALUE!


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