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EXCEL T.INV FUNCTION
Excel T.INV Function Introduction
The Excel T.INV function computes the left-tailed invert of the Student’s T Distribution, which is a continuous probability distribution commonly used for data analysis on tiny sample data sets.
Description of Excel T.INV Function
Syntax :
=T.INV( probability, degrees_freedom )
Parameters :
- probability – The probability (from 0 and 1) for which the inverse of the left-tailed Student’s T Distribution should be calculated.
- degrees freedom – The amount of degrees of freedom required (must be 1).
Step By Step Guide of T.INV Function
Example :
The left-tailed Inverse Student’s T Distribution with 10 degrees of freedom is seen on the right.
If you need to determine the value of this function for a probability of 0.25, use the Excel T.Inv function, as shown below:
T.INV = T.INV ( 0.25, 10 )
This produces the value -0.699812061.
Key Points
#NUM! – If any of the following conditions is encountered:
The given probability is either 0 or greater than 1. or The given degrees of freedom value is 1.
#VALUE! – Occurs if one or both of the supplied arguments is not a number.
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