atlas-mad
v1.0.0
Published
Calculates the median absolute deviation of a set of data points in-place.
Downloads
18
Maintainers
Readme
atlas-mad
Calculates the median absolute deviation of a set of data points in-place.
install
npm install --save atlas-mad
why
Breaking up atlas-dataset into standalone functions. This module computes the median absolute deviation (MAD) over an array of numbers:
The MAD is a more robust measure of "spread" in a distribution because it does not suffer from quadratic outlier contributions, unlike the standard deviation. The MAD is useful for cases where your data contains a small number of outliers (e.g. programming benchmarks).
examples
unsorted array
The mad
function sorts the array in-place before calculating the median absolute deviation.
const mad = require("atlas-mad")
console.log(mad([4,3,1,2]))
// 1
sorted array
To avoid sorting a pre-sorted array, use a boolean flag:
...
const isSorted = true;
console.log(mad([1,2,3,4,5], isSorted)) // fast
// 1