mean average
(July 2013) In mathematics and statistics, the arithmetic mean (/ËÃ¦rÉªÎ¸ËmÉtÉªk ËmiËn/), or simply the mean or average when the context is clear, is the sum of a collection of numbers divided by the number of numbers in the collection. The collection is often a set of results of an experiment, or a set of results from a survey.