Q1 of 26 Page 14

Find the mean deviation from the mean for the following data: 4, 7, 8, 9, 10, 12, 13, 17


= = = 10

= 6 + 3 + 2 + 1 + 0 + 2 + 3 + 7 = 24

M.D.() = 24/8 = 3

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