The average of a set of two or more numbers, also known as the arithmetic mean, is calculated by summing all the numbers in the set and then dividing that sum by the total count of the numbers.
The formula for calculating the average is:
\[ \text{Average} = \frac{\text{Sum of all numbers}}{\text{Total count of numbers}} \]
For example, if you have the numbers 4, 8, and 10:
- Sum the numbers: \(4 + 8 + 10 = 22\)
- Count the numbers: There are 3 numbers in this set.
- Calculate the average: \(\frac{22}{3} \approx 7.33\)
So, the average of the set {4, 8, 10} is approximately 7.33.