Question

Prices of shares of a company were note as under from Monday through Saturday. Find out range and the coefficient of range.

Day	Mon.	Tues.	Wed.	Thu.	Fri.	Sat.
Price (₹)	200	210	208	160	220	250

Answer 1

Here,
Highest value among the prices of shares= 250
Lowest Value among the prices of shares= 160

Range (R) = Highest value (H)− Lowest Value (L)
or, R = 250 − 160
$\Rightarrow$ R = 90
$$\begin{gathered} \mathrm{Coefficient}\mathrm{of}\mathrm{Range}\left(\mathrm{CR}\right)\mathit{=}\frac{H\mathit{-}L}{H\mathit{+}L} \\ \mathrm{or},\mathrm{CR}=\frac{250-160}{250+160}=\frac{90}{410} \\ \Rightarrow \mathrm{CR}=0.219\mathrm{or}0.22(\mathrm{approx}.) \end{gathered}$$

Hence, the Range (R) of the above data is 90 and Coefficient of Range (CR) is 0.22