Question

There are 1120 creatures in a zoo as per list given below:

Beast animals	Other land animals	Water animals	Birds	Reptiles
220	410	165	190	135

Represent the above data by a bar graph.

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 names of the places at points taken at uniform gaps.
Step 3: Choose the scale: 1 small division = 10 animals
Step 4: Then the height of the various bars are:
$$\begin{gathered} \mathrm{Beast}\mathrm{animals}\mathrm{in}\mathrm{zoo}=\left(\frac{1}{10}\times 220\right)=22\mathrm{small}\mathrm{divisions} \\ \mathrm{Other}\mathrm{land}\mathrm{animals}\mathrm{in}\mathrm{zoo}=\left(\frac{1}{10}\times 410\right)=41\mathrm{small}\mathrm{divisions} \\ \mathrm{Water}\mathrm{animals}\mathrm{in}\mathrm{zoo}=\left(\frac{1}{10}\times 165\right)=16.5\mathrm{small}\mathrm{divisions} \\ \mathrm{Birds}\mathrm{in}\mathrm{zoo}=\left(\frac{1}{10}\times 190\right)=19\mathrm{small}\mathrm{divisions} \\ \mathrm{Reptiles}\mathrm{in}\mathrm{zoo}=\left(\frac{1}{10}\times 135\right)=13.5\mathrm{small}\mathrm{divisions} \end{gathered}$$
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: