Find the mean deviation of 20, 30, 25, 40, 35, 50, 45, 40, 20 and…

Find the mean deviation of 20, 30, 25, 40, 35, 50, 45, 40, 20 and 45

  • A.
    8
  • B.
    9
  • C.
    10
  • D.
    12
Correct Answer: Option B
Explanation

Mean = (frac{sum f x}{sum f})

= (frac{350}{10})

= 35

= (frac{sum f |d|}{sum f})

= (frac{90}{10})

= 9

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