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See the recommended documentation of this function

# mad

mean absolute deviation

### Calling Sequence

```s2=mad(x)
s2=mad(x,'r') or s2=mad(x,1)
s2=mad(x,'c') or s2=mad(x,2)```

### Arguments

x

real or complex vector or matrix

### Description

This function computes the mean absolute deviation of a real or complex vector or matrix `x`.

For a vector or matrix `x`, `s2=mad(x)` returns in scalar `s2` the mean absolute deviation of all the entries of `x`.

`s2=mad(x,'r')` (or, equivalently, `s2=mad(x,1)`) returns in each entry of the column vector `s2` the mean absolute deviation of each column of `x`.

`s2=mad(x,'c')` (or, equivalently, `s2=mad(x,2)`) returns in each entry of the column vector `s2` the mean absolute deviation of each row of `x`.

### Examples

```x  = [2 2 3 4 14];

// Mean absolute deviation of a set of data
// Expected = (|2-5|+|2-5|+|3-5|+|4-5|+|14-5|) / 5 = 3.6
mad(x)```

### Bibliography

Reference: Wonacott T.H.& Wonacott R.J. .- Introductory Statistics, 5th edition, John Wiley, 1990.

### Comments

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