Function for generating values from chi-square distributions.

## Interface

chisq(n:int) : real

where `n>=1`

. It returns a drawing from a chi-square distribution with

`n`

degrees of freedom.

The sum of the squares of `n`

independent normally distributed random

variables with mean `0.0`

and standard deviation `1.0`

is a chi-squared distribution with `n`

degrees of freedom.

It raises `Chisq`

exception if `n<1`

.

## Characteristics

- Mean:
`n`

- Variance:
`2n`

Density functions for chi-square distributions:

## Example

An example for this distribution has been omitted because it is rarely found in nature. Instead, the distribution is used when doing statistical tests.

You must be logged in to post a comment.