mode means the most repeating number there is EX: 15,17,19,20,20,20,24,26,34 then 20 would be the mode because its the most repeating number.
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In mathematics, the term Mode (noun) is defined as an average found by
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"Mode" is a mathematical term for the number that appears most often in a list of numbers. The following list of numbers provides a good example:
http://www.in.gov/dol/2345.htm

The number that occurs most in a set of data.
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