Problem
A survey was conducted to determine the average number of books read by 5 students in a class in a month. The number of books read by each of the students are: 7, 8, 9, 10 and 11. What is the mean number of books read by the students?
Solution
Step 1 ：Step 1: Add all the numbers together, which is \(7 + 8 + 9 + 10 + 11 = 45\)
Step 2 ：Step 2: Divide the sum of the numbers by the total count of numbers, which is \(\frac{45}{5} = 9\)
