> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# atoti.stats.chi2.ppf()

### atoti.stats.chi2.ppf(point, /, \*, degrees\_of\_freedom)

Percent point function for a chi-square distribution.

<Warning>
  This feature is [`experimental`](./atoti.experimental#atoti.experimental), its key is `"stats.chi2.ppf"`.
</Warning>

Also called inverse cumulative distribution function.

* **Parameters:**
  * **point** (*VariableMeasureConvertible*) – The point where the function is evaluated.
  * **degrees\_of\_freedom** (*StrictlyPositiveNumber* *|* *VariableMeasureConvertible*) – The number of degrees of freedom.
    Must be positive.
* **Return type:**
  MeasureDefinition

<Callout icon="link">
  **See also**:
  [The Chi-square Wikipedia page](https://en.wikipedia.org/wiki/Chi-square_distribution).
</Callout>