# WEIBULL

## Content

This function returns the two-parameter Weibull distribution, often used in reliability analysis.

## Syntax

`WEIBULL( x, alpha, beta, cumulative )`

## Arguments

This function has these arguments:

| Argument | Description |
| -------- | ----------- |
| *x* | Value at which to evaluate the distribution |
| *alpha* | Scale parameter of the distribution, represented by alpha |
| *beta* | Shape parameter of the distribution, represented by beta |
| *cumulative* | Logical value that determines the form of the function If cumulative is TRUE, then this function returns the cumulative distribution function; if FALSE, it returns the probability mass function. |

## Data Types

Accepts numeric data for all arguments except cumulative, which is logical (boolean). Returns numeric data.

## Examples

`WEIBULL(3,D4,D5,FALSE)`

`WEIBULL(50,10,20,TRUE)`