# mean

Returns the mean of `X`. When `x` is a matrix the
mean for each column and returns them in a row vector.

## Syntax

mean(x)

mean(x, dim)

## Inputs

`x`- Any integer
`dim`- Dimension along which the mean is calculated.

## Outputs

- R
- Calculated mean

## Example

Simple mean example

`mean([1,4,3;6,2,3;1,29, 9])`

`R = [ 2.6667 11.667 5 ]`

## Example

Mean example with `dim`

`mean([1,4,3;6,2,3;1,29, 9], 2)`

`R = [ 2.6667 ; 3.6667 ; 13 ]`

## Comments

mean(x) = sum(x) / N