This problem came from the Colt Steele Udemy JS Bootcamp. He is introducing Node, and the problem is to average an array. I had to review my array summing options. I did it two ways — the first using the forEach() method, and the second using the reduce() method.
Once I have the sum of the array, I divide it by array.length to get the average. I use Math.round() to round the number to the nearest integer.
function grader(scores) { let sum = 0 // OPTION 1 - FOREACH METHOD scores.forEach(function(score) { sum += score; }); // OPTION 2 - REDUCE METHOD // sum = scores.reduce(function(a,b) { // return a+b; // }, 0); let avg = Math.round(sum / scores.length); console.log(avg, scores); return avg; } grader([90,98,89,100,100,86,94]); grader([40,65,77,82,80,54,73,63,95,49]);