Question

Calculate range and coefficient of range of the following data:

X	:	10	15	20	30	40	50
f	:	4	12	7	3	5	2

Answer 1

Range = Largest Value (L) − Smallest Value (S)
= 50 − 10 = 40
$$\begin{gathered} \mathrm{Coefficient}\mathrm{of}\mathrm{Range}=\frac{L-S}{L+S}=\frac{50-10}{50+10} \\ =\frac{40}{60}=0.67 \end{gathered}$$