Functions call functions js
/*
Write a function sum that takes an array of numbers and
returns the sum of these numbers.
Write a function mean that takes an array of numbers and
returns the average of these numbers.
The mean function should use the sum function.
*/
function sum (arr) {
let suma = 0;
for (let i = 0; i < arr.length; i++) {
let num= parseInt(arr[i]);
suma += num;
}
return suma;
}
function mean (arr) {
let average = sum(arr) /arr.length;
return average;
}