TINV(probability, degrees_freedom)

Returns the t-value of the distribution as a function of the probability and the degrees of freedom.

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

Remarks

* T.INV.2T was added in Excel 2010 to replace this function.
* The t distribution is a continuous distribution.
* The random variable returned by this function is often referred to as a critical value.
* 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" < 1, then #NUM! is returned.
* If "degrees_freedom" is not an integer, it is truncated.
* If "degrees_freedom" is not numeric, then #VALUE! is returned.
* In Excel 2010 the accuracy of this function was improved.
* For the Microsoft documentation refer to support.microsoft.com

 A
1=TINV(100%,1) = 0.000
2=TINV(50%,1) = 1.000
3=TINV(25%,1) = 2.414
4=TINV(10%,1) = 6.314
5=TINV(2%,1) = 31.821
6=TINV(1%,1) = 63.657
7=TINV(0.5%,1) = 127.321

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