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AP EAMCET20224 Jul 2022Morning ShiftMathematicsStatisticsActual

The mean deviation about the mean for the following data: 5 , 6 , 7 , 8 , 6 , 9 , 13 , 12 , 15 is

Options

  1. A1 . 55
  2. B2 . 88
  3. C3 . 89
  4. D5

Correct answer

B. 2 . 88

Step-by-step solution

Mean, x ¯ = 5 + 6 + 7 + 8 + 6 + 9 + 13 + 12 + 15 9 = 9 Mean deviation about mean, ∑ x i - x ¯ N = 4 + 3 + 2 + 1 + 3 + 0 + 4 + 3 + 6 9 = 26 9 = 2 . 88

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