Question

For the given histogram data set, what is the width of the bar graph? Given that 1kg is 2 units in the x axis.

$$\begin{array}{cccccc}Weights\left(Kg\right)& 40-45& 45-50& 50-55& 55-60& 60-65\\ No.ofPerson& 4& 12& 13& 6& 5\end{array}$$

• A. 5
• B. 10
• C. 15
• D. 20

Answer 1

The correct option is B

10

The width of the bar should be equivalent to 5 kg since this is the class interval. But 1 kg equates to two units in the x axis. Hence the width of graph is $5\times 2$ = 10 units.