Average
the central tendency. middle or typical number of a list of numbers, including mean, median and mode / From Wikipedia, the free encyclopedia
An average is the "normal" number of a group of numbers made by mixing the group of numbers.
In math, an average is called a mean. It can be found by adding the numbers, then dividing the answer by the number of numbers there were. There are other kinds of mean, and other things that are sometimes thought of as "average" such as median or mode (statistics).