mean average = sum of dataset / number of items in dataset = (14 + 18 + 13 + 15) / 4 = 60/4 = 15
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They are 13, 14, 15, 16 and 17.
It is (13+14+16+17+17+18)/6.
93
10 7 11 12 9 13 14 11 15 16 13 17 18 15 19 20...
(14, 15, 16, 16, 16, 18, 22, 25) Mode: 16 Mean: 17.75 Median: 16