Mean - GCSE Maths Definition
Reviewed by: Dan Finlay
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The mean, often called the average, is a way of finding a typical value in a set of numbers. To calculate it, you add up all the numbers in the group and then divide the total by the number of numbers you added. For example, if you have the numbers 4, 5, and 6, you first add them together to get 15. Then, since you added 3 numbers, you divide 15 by 3 to get a mean of 5.
The mean gives you an idea of what is usual or normal in the set of numbers you are looking at, and it helps in understanding data better in maths.
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