# mean

Mean of array elements.

## Syntax

* R = mean(M)
* R = mean(M, d)
* R = mean(M, 'all')
* R = mean(M, d, t)
* R = mean(M, 'all', t)
* R = mean(M, d, t, f)
* R = mean(M, 'all', t, f)

## Input argument

* M - an array of double, single, integers, ...
* d - dimension to operate along: positive integer scalar.
* t - a string: 'default', 'double' or 'native'.
* f - a string: 'includenan' or 'omitnan'.

## Output argument

* R - Mean of array elements.

## Description

**R = mean(M)** returns the mean of the array elements of M.

## Example

```matlab
M = uint8([10:30:70;20:30:80;30:30:90]);
R = mean(M, 'native')
```

## See also

[sum](https://github.com/Nelson-numerical-software/nelson-gitbook/blob/master/en/statistics/sum.html), [prod](https://github.com/Nelson-numerical-software/nelson-gitbook/blob/master/en/statistics/prod.html).

## History

| Version | Description     |
| ------- | --------------- |
| 1.0.0   | initial version |

## Author

Allan CORNET
