Daniel Saxil-Nielsen dtsn

dtsn / standard-deviation.js

Created May 26, 2016 08:34

How to get the mean and standard deviation from an array in JavaScript

	var arr = [1,1,1,2,3,4,5,3,3,3,4,5,6,3,2,4,6];

	// first work out the mean
	var mean = arr.reduce(function (p, c) {
	return p + c;
	}) / arr.length;

	// now the stanard deviation
	var standardDeviation = Math.sqrt(arr.map(function (l) {
	return Math.pow(l - mean, 2);

dtsn / 0_reuse_code.js

Last active February 27, 2017 11:29

Here are some things you can do with Gists in GistBox.

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console