# invNormal {#invnormal}

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

## Syntax {#syntax}

`invNormal(mean, stdev, X)`

## Arguments {#arguments}

**mean** is the mean of a normal distribution.

**stdev** is the standard deviation of a normal distribution.

**X** is a floating scalar or vector between 0 and 1.

## Details {#details}

Return the value of a normal inverse cumulative distribution function.

## Examples {#examples}

```
invNormal(0,1,0.33);
// output: -0.439913

invNormal(10, 20, [0.1 0.2 0.3]);
// output: [-15.631031, -6.832425, -0.48801]
```

