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

The mean deviation about the mean for the following data: 5,6,7,8,6,9,13,12,15 is
  1. 1.55
  2. 2.88
  3. 3.89
  4. 5

Solution

Mean, x¯=5+6+7+8+6+9+13+12+159=9

Mean deviation about mean, ∑xi-x¯N=4+3+2+1+3+0+4+3+69

=269=2.88

Asked in: AP EAMCET 2022 (04 Jul Shift 1)

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