Question 49
Measures of DispersionCalculate the mean deviation of the set of numbers 7, 3, 14, 9, 7 and 8
- A.2⅙
- B.2½
- C.1⅙
- D.2⅓
Show the answer and explanation
Answer: D (2⅓)
Explanation
The mean is 48 ÷ 6 = 8. The distances from 8 are 1, 5, 6, 1, 1, 0, which add to 14. Mean deviation = 14 ÷ 6 = 2⅓.