Question

Look at the bar graph given below:

Read it carefully and answer the following questions.
(i)What information does the bar graph give?
(ii)In which subject is the student very good?
(iii)In which subject is he poor?
(iv)What is the average of his marks?

Answer 1

Hint: A bar graph gives the information in picture form. We have to write the information according to the bar graph in text form.
In the bar graph, the tallest bar gives the highest value according to the y-axis. Similarly, the shortest bar gives the lowest value. To get the exact value of the bar, we have to look at the number corresponding to the same height on Y-axis.

Complete step-by-step answer:
(i)The above given bar graph shows the information about the marks scored by a student in every individual subject.
(ii)The student is very good in the subject of Mathematics as he has scored the highest of 75 marks in the subject of Mathematics.
(ii)The student is poor in the subject of Hindi as he has scored the lowest of 35 in the subject of Hindi.
(iv)The average marks of the student are $${\displaystyle \frac{60+35+75+50+60}{5}}={\displaystyle \frac{280}{5}}=56$$ .

Additional information:
The bar graph is used to compare certain quantities collectively.
There are 2 types of bar graphs:
1.Vertical Bar Graph
2.Horizontal Bar Graph
(1) Vertical Bar Graph:
When the grouped data are represented vertically in a graph using bars, in which bars represent the measurement of the data, that bar graph is called a vertical bar graph. In these types of graphs, the data is represented along the Y-axis and the height of the bars shows the value.
(2) Horizontal Bar Graph:
When the grouped data are represented horizontally in a graph using bars, in which bars represent the measurement of the data, that bar graph is called a horizontal bar graph. In these types of graphs, the data is represented along X-axis and the length of the bars shows the value.

Note: Individual answers may differ from the above answers of the questions number (i). This is a basic question based on the bar graph. Visualize the graph properly to get correct answers.