Mean— A mathematical average of a group of numbers

— The actual middle of a group of numbers when the numbers are in numerical order. 14,18,18,18,19,21,23 The middle number is 18. If there is an even number of items, find the average of the two middle numbers. 11,11,13,15,18,19,22.25 15+18 = 16.5 Median ................
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