maia-util/es6/mean.js

Utility math and music functions supporting various applications by Music Artificial Intelligence Algorithms, Inc.

export default function mean(arr){
  // Christian Coulon and Tom Collins 17/10/2014.
  // In
  // arr Array mandatory
  // Out Number
  // This function returns the mean of an input numeric array.

  if (!arr.length){
    return 0;
  }
  else{
    var sum = 0;
    for (let i = 0; i < arr.length; i++){
      sum += arr[i];
    }
    return sum/arr.length;
  }
}