function find Average(accumulator, currentValue, index, array)
const arr = [2, 4, 5, 6];
// Find average function
function fAve(totalVal, arrVal, index, array) {
const val = totalVal + arrVal;
if (index === array.lengh -1) {
return val / array.length;
}
return val;
}
// Pass function into reduce method
const average = arr.reduce(fAve);
console.log(average);
//node (js file name).