# FInv - Script and chart function

`FInv()` returns the inverse of the accumulated probability of the `F` distribution.

Syntax:

FInv(prob, degrees\_freedom1, degrees\_freedom2)

Return data type: number

Arguments:

Arguments

| Argument | Description |
| --- | --- |
| prob | A probability associated<br>with the F-probability distribution and must be a number between 0 and 1. |
| degrees\_freedom | An integer stating the number of degrees of freedom. |

This function is related to the FDist function in the following way:   
`If prob = FDIST(value, df1, df2), 
 then FINV(prob, df1, df2) = value`

Limitations:

All arguments must be numeric, else NULL will be returned.

[](https://help.qlik.com/en-US/sense/Subsystems/Hub/Content/Sense_Hub/Scripting/StatisticalDistributionFunctions/FInv.htm)

#### Examples and results:

| Example | Result |
| --- | --- |
| FINV( 0.0019369, 8, 6) | Returns 15.0000 |

## Learn more

* [FDist - Script and chart function](https://help.qlik.com/en-US/sense/November2025/Subsystems/Hub/Content/Sense_Hub/Scripting/StatisticalDistributionFunctions/FDist.htm)