Question

Calculate the coefficient of range for the following set of data. 3, 6, 6, 8, 9 and 12
1. 22.2
2. 44.4
3. 50
4. 0.6

Answer 1

Correct Answer - Option 4 : 0.6

Formula 

Coefficient of range = (maximum range - minimum range)/(maximum range + minimum range)

Range = Maximum value - minimum value

Calculation

Maximum range = 12 and minimum range = 3

⇒ Coefficient of range = (12 - 3)/12 + 3

∴ Coefficient of range = 0.6