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What is the mean deviation of the data 2,9,9,3,6 , 9,4 ?

Options

  1. A2.23
  2. B2.57
  3. C3.23
  4. D3.57

Correct answer

B. 2.57

Step-by-step solution

aligned & Mean deviation = |x_i- x | n & = |2-6|+|9-6|+|9-6|+|3-6| +|6-6|+|9-6|+|1-6| & = 18 7 =2.57 aligned

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