# cdfChiSquare {#cdfchisquare}

**Parent topic:**[Functions](../../Functions/category.md)

## Syntax {#syntax}

`cdfChiSquare(df, X)`

## Arguments {#arguments}

**df** is a positive integer indicating the degree of freedom of a chi-squared distribution.

**X** is a numeric scalar or vector.

## Details {#details}

Return the value of the cumulative distribution function of a chi-squared distribution.

## Examples {#examples}

```
cdfChiSquare(1, [-1, 0, 0.5, 1, 2]);
// output: [0, 0, 0.5205, 0.682689, 0.842701]

cdfChiSquare(1, [0.1, 0.3, 0.5, 0.7, 0.9]);
// output: [0.24817, 0.416118, 0.5205, 0.597216, 0.657218]
```

