Write a JavaScript program to find the sum and average of array elements

Description: Find the sum and the average of the array [10, 20, 30, 40].

Hint:

• Use reduce() to add all items.
• Average = sum / number of items.

---

JavaScript program for sum and average of an array

const numbers = [10, 20, 30, 40];

const sum = numbers.reduce((total, n) => total + n, 0);
const average = sum / numbers.length;

console.log("Sum:", sum);
console.log("Average:", average);

Output:

How it works

• reduce() starts with 0 and adds each number.
• The average is the sum divided by numbers.length.

Read Array Methods.

• Previous Exercise
• Next Exercise

---

Tutorials
No Content Found.

Exercises & Assignments
No Content Found.

Interview Questions & Answers
No Content Found.