0
Anonymous
10 + 10 + 10 + 10 + 15 + 15 + 0 = 70
70/7 = 10
Average = 10
Wiki User
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Average(5, 10, 15) = (5 + 10 + 15)/3 = 30/3 = 10
15
20, 15, 10, 5, 0, -5, -10, -15, -20 and so on.
9 they are -20, -15, -10, -5, 0, 5, 10, 15, 20.