Question

The following table shows the number of motorcycles produced by a company during six
consecutive years.

2009	2010	2011	2012	2013	2014
14000	16000	18500	21000	24000	30000

Draw a bar graph to represent the above data

Answer 1

The following steps are followed while drawing the bar graph:

Step 1: On a graph paper, draw a horizontal line OX and a vertical line OY, representing the x-axis and y-axis, respectively.
Step 2: Along OX, write the years of census at points taken at uniform gaps.
Step 3: Choose the scale: 1 small division = 500 motorcycles
Step 4: Then the height of the various bars are:
$$\begin{gathered} \mathrm{Number}\mathrm{of}\mathrm{motorcycles}\mathrm{in}2009=\left(\frac{1}{500}\times 14000\right)=28\mathrm{small}\mathrm{divisions} \\ \mathrm{Number}\mathrm{of}\mathrm{motorcycles}\mathrm{in}2010=\left(\frac{1}{500}\times 16000\right)=32\mathrm{small}\mathrm{divisions} \\ \mathrm{Number}\mathrm{of}\mathrm{motorcycles}\mathrm{in}2011=\left(\frac{1}{500}\times 18500\right)=37\mathrm{small}\mathrm{divisions} \\ \mathrm{Number}\mathrm{of}\mathrm{motorcycles}\mathrm{in}2012=\left(\frac{1}{500}\times 21000\right)=42\mathrm{small}\mathrm{divisions} \\ \mathrm{Number}\mathrm{of}\mathrm{motorcycles}\mathrm{in}2013=\left(\frac{1}{500}\times 24000\right)=48\mathrm{small}\mathrm{divisions} \\ \mathrm{Number}\mathrm{of}\mathrm{motorcycles}\mathrm{in}2014=\left(\frac{1}{500}\times 30000\right)=60\mathrm{small}\mathrm{divisions} \end{gathered}$$
Step 5: On the x-axis, draw bars of equal width and of heights obtained in step 4 at the points marked in step 2.

The completed bar graph is as shown below: