The mean is the average of a set of numbers. It is the sum of all the items in a set, divided by the total number of items in the set.
A group of numbers can be referred to as a set.
Example: 15, 4, 37, 18, 11.
Mean of two numbers:
When there are only two numbers, the mean is easy to find. It is simply the number that is halfway between the two numbers of the set.
Here, 25 is halfway between 10 and 40, so it is the mean.
Mean of more than two numbers:
Mean in real life:
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