Divide the sum by 2 to get the average. Finding the Arithmetic Mean Average Value. What is an Average of 100 200.
It is calculated by adding up all the numbers then dividing the total by the count of numbers.
Enter the numbers you want to find the average of. To illustrate how each of the central. Divide your sum by the amount of numbers in the set. You then multiply this decimal by 100 to get the average percentage.