Mathematics

What is the mean deviation of 3, 5, 8, 11, 12 and 21?

What is the mean deviation of 3, 5, 8, 11, 12 and 21?
  • A.
    4.7
  • B.
    60
  • C.
    3.7
  • D.
    10
Correct Answer: Option A
Explanation

Mean (= bar{x} = frac{60}{6} = 10)
mean deviation (= frac{sum|x-bar{x}|}{n} = frac{28}{6})
= 4.7