What's the average of the following set of numbers? (2, 9, 6, 6)

5.75

Explanation

The average of a set of numbers is the sum of the numbers divided by how many numbers are being averaged. So, the average of 2, 9, 6, and 6 is (2 + 9 + 6 + 6) / 4 or 23 / 4 = 5.75.