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AP EAMCET202120 Aug 2021Morning ShiftMathematicsStatisticsActual

The mean deviation from the mean of the set of observations, - 1 , 0 , 4 is

Options

  1. A3
  2. B1
  3. C- 2
  4. D2

Correct answer

D. 2

Step-by-step solution

Using the given data, Mean of the set of observations is x   = ∑ i = 1 n x i n Hence, x = - 1 + 0 + 4 3 = 1 Now using the formula for mean deviation, M D = ∑ i = 1 n | x i - x | n ⇒   M D = - 1 - 1 + 0 - 1 + 4 - 1 3 ⇒   M D = 2

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