How do I create an average from a Ruby array?

Question

How would get find an average from an array?If I have the array: [0,4,8,2,5,0,2,6]Averaging would give me 3.375.Thanks!

Answer 1

What you can do is:

1. you sum all the number inside of the array using .sum
2. then you change the total from being an integer to a float number using .to_f
3. then you divide that by the total number of elements inside the array using .size
4. then you change that number from an integer to a float using the .to_f

It looks like like this:

arr = [0,4,8,2,5,0,2,6]

arr.sum.to_f/arr.size.to_f