14
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Mean = (15 + 12 + 16 + 13)/4 = 56/4 = 14
15*14*13*12 = 32,76015*14*13*12 = 32,76015*14*13*12 = 32,76015*14*13*12 = 32,760
mean average = sum of dataset / number of items in dataset = (14 + 18 + 13 + 15) / 4 = 60/4 = 15
They are 13, 14, 15, 16 and 17.
115/10 = 11.5