Question

Question 49
In a garden, the number of different types of plants is found as follows:

$\begin{array}{cc}\text{Type of the plant}& \text{Number of plants}\\ \text{Herb}& 50\\ \text{Shrub}& 60\\ \text{Creeper}& 20\\ \text{Climber}& 45\\ \text{Tree}& 95\end{array}$

Draw a bar graph to represent the above information and answer the following question
(a) Which type of plant is maximum in number in the garden?
(b) Which type of plant is minimum in number in the garden?

Answer 1

A Bar Graph (also called Bar Chart) is a graphical display of data using bars of different heights.

In order to construct a bar graph representing the above data, we follow the following steps:
Step I Take a graph paper and draw two mutually perpendicular lines OX and OY, let OX as the horizontal axis and OY as the vertical axis
Step II Along OX, mark type of the plant and along OY, mark number of plant
Step III Along OX, choose the uniform width of the bars and the uniform gap between them according to the space available for the graph
Step IV Choose a suitable scale to determine the heights of the bars, according to the availability of space. Here, we choose 1 unit length represents 10 plants
Step V Calculate the height of various bars as follow
$\begin{array}{cc}\text{Type of the plant}& \text{Height of bars}\\ \text{Herb}& \frac{50}{10}=5\text{units}\\ \text{Shrub}& \frac{60}{10}=6\text{units}\\ \text{Creeper}& \frac{20}{10}=2\text{units}\\ \text{Climber}& \frac{45}{10}=4.5\text{units}\\ \text{Tree}& \frac{95}{10}=9.5\text{units}\end{array}$
Hence, the required bar graph for the given data is shown below

(a) On studying bar graph, the tree is the maximum in number in the garden
(b) On studying bar graph, creeper plants is the minimum in number in the garden.