Here you can find the source of mean()
Array.prototype.mean = function(){ return this.sum()/this.length; }
Array.prototype.mean = function () { var sum = this.reduce(function(previousValue, currentValue) { return previousValue + currentValue; }); return sum / this.length; };
Array.prototype.mean = function() { mean = 0; for (var i = 0; i < this.length; i++) { mean += this[i]; mean = mean / this.length; return mean; };
Array.prototype.mean = function() { var length = this.length; return this.total()/length; };
Array.prototype.mean = function(){ return this.sum()/this.length; Array.prototype.sum = function(){ var ret = this[0]; for(var i=1;i<this.length;i++){ ret += this[i] return ret; ...
Array.prototype.mean = function() { return (this.total()) / (this.length); Array.prototype.total = function() { var finalTotal = this.reduce(function(total, number){ return total + number; }, 0); return finalTotal
Array.prototype.mean = function() { for ( var b = 0, d = this.length, c = 0; b < d; c += this[b++]) { var a = c / d; return a };