Question

Calculate range and coefficient of range for the following data:

Income (₹)	:	50	70	80	90	100	120	130	150
No of workers	:	2	8	12	7	4	3	8	6

Answer 1

Range = Largest item (L) − Smallest item (S)
= 150 − 50 = 100
$$\begin{gathered} \mathrm{Coefficient}\mathrm{of}\mathrm{Range}=\frac{L\mathit{-}S}{L+S}=\frac{150-50}{150+50} \\ =\frac{100}{200}=0.5 \end{gathered}$$