To find the average (also called the arithmetic mean) of a set of numbers, follow these steps:
- Add together all the numbers in the set.
- Count how many numbers are in the set.
- Divide the sum by the count of numbers.
For example, for the numbers 3, 11, 4, 6, 8, 9, and 6:
- Step 1: Add all numbers: 3 + 11 + 4 + 6 + 8 + 9 + 6 = 47
- Step 2: Count the numbers: 7
- Step 3: Divide the sum by the count: 47 ÷ 7 = 6.7
So the average is 6.7. This method applies generally for any numbers, and the average represents the central value of the data set.