wikiHow Calculating Mean Calculator The mean is a measure of central tendency that represents the average of a set of numbers. To calculate the mean of a set of numbers, you add up all the numbers in the set and divide the sum by the total number of values in the set. Here are the steps to calculate the mean: 1. Add up all the numbers in the set. 2. Count the total number of values in the set. 3. Divide the sum of the numbers by the total number of values. The formula for calculating the mean is: Mean = (Sum of values) ÷ (Number of values) For example, if you have the following set of numbers: 2, 4, 6, 8, 10, you would calculate the mean as follows: Mean = (2 + 4 + 6 + 8 + 10) ÷ 5 Mean = 30 ÷ 5 Mean = 6 So the mean of the set of numbers is 6. Page