Question

8 numbers have a sum of 90. Whats the average number?

Answer 1

`\huge\boxed{11.25}`

Explanation:

When finding the average of a set of numbers, we

• A) Add up all the numbers
• B) Divide that sum by the total number of numbers in the data set

Let's represent this with a formula, s being the sum of all numbers, n being the total number of numbers.

`(s)/(n)`

Since we already know the sum and we know how many numbers there are (8), we can substitute inside our expression
`(s)/(n)` to find the average.

• 
  `(90)/(8)`
• 
  `11.25`

Therefore, the average of all these numbers is 11.25.

Hope this helped!