## Median Absolute Deviation

## Usage

    mad(x, center, constant=1.4826, na.rm=FALSE)

## Description

`mad` provides a scale estimate based on the median absolute deviation. The actual value calculated is `constant * (median(abs(x - center)))` with the default value of `center` being `median(x)`.

If `na.rm` is `TRUE` then `NA` values are stripped from `x` before computation takes place. If this is not done then an `NA` value in `x` will cause `mad` to return `NA`.

## See Also

`median`, `var`.

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