Arithmetic mean: Difference between revisions
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Revision as of 14:01, 23 October 2012
Maths. The arithmetic mean of a set of data is the simple average calculated by adding up all of the values and dividing by the total number of items. For example, the arithmetic mean of 4%, 5% and 6% is = (4% +5% +6%)/3 = 5%.
Also sometimes known as the Mean or the Expected value E[X].
Sometimes denoted by 'ยต' - the Greek letter mu (or m).
See also