Answers for "average of an array of numbers"

how to calculate average of array in javascript

const arrAvg = arr => arr.reduce((a,b) => a + b, 0) / arr.length

javascript average of numbers in array

const scores = [ 20, 50, 75, 100, 115 ];
let total = 0;

for ( let i = 0; i < scores.length; i++ ) {
  total += scores[i];
}

console.log( total / scores.length );