# cdfWeibull {#cdfweibull}

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

## Syntax {#syntax}

`cdfWeibull(alpha, beta, X)`

## Arguments {#arguments}

The scale parameters **alpha** and **beta** are both positive floating numbers.

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

## Details {#details}

Return the value of the cumulative distribution function of a Weibull distribution.

## Examples {#examples}

```
cdfWeibull(2.31, 0.627, [0.001, 0.5, 0.999]);
// output: [0, 0.447241, 0.946762]

cdfWeibull(2.31,0.627, [0.1, 0.3, 0.5, 0.7, 0.9]);
// output: [0.014295, 0.166535, 0.447241, 0.724646, 0.90021]
```

