Table of Contents
Understanding the Average (Mean)
In mathematics, the average (specifically the arithmetic mean) of a set of numbers is the sum of the numbers divided by the count of numbers in the set. It represents the central value of a discrete set of numbers.
How to Calculate by Hand
Finding the mean involves two simple steps:
Average = (Sum of all values) / (Total count of values)
Examples
If you want to find the average of 5, 10, and 15:
- Sum = 5 + 10 + 15 = 30
- Count = 3
- Average = 30 / 3 = 10