RS Aggarwal Solutions for Class 9 Chapter 17: Bar Graph, Histogram and Frequency Polygon Exercise 17A

RS Aggarwal Solutions for Class 9 Maths Exercise 17A PDF

This is the first exercise of Chapter 17 which contains problems solved on representing the given data using bar graphs. This is one of the scoring concepts in Mathematics as the students can obtain a good score in the board exam based on its weightage. The students by understanding the concept and formulas can solve huge numbers of problems in a shorter duration. The solutions are created by subject experts with the aim of making the concepts easier for students. RS Aggarwal Solutions for Class 9 Maths Chapter 17 Bar Graph, Histogram and Frequency Polygon Exercise 17A are provided here.

RS Aggarwal Solutions for Class 9 Chapter 17: Bar Graph, Histogram and Frequency Polygon Exercise 17A Download PDF

 

RS Aggarwal Solutions Class 9 Maths Chapter 17A
RS Aggarwal Solutions Class 9 Maths Chapter 17A
RS Aggarwal Solutions Class 9 Maths Chapter 17A
RS Aggarwal Solutions Class 9 Maths Chapter 17A
RS Aggarwal Solutions Class 9 Maths Chapter 17A
RS Aggarwal Solutions Class 9 Maths Chapter 17A
RS Aggarwal Solutions Class 9 Maths Chapter 17A
RS Aggarwal Solutions Class 9 Maths Chapter 17A
RS Aggarwal Solutions Class 9 Maths Chapter 17A
RS Aggarwal Solutions Class 9 Maths Chapter 17A

 

Access RS Aggarwal Solutions for Class 9 Chapter 17: Bar Graph, Histogram and Frequency Polygon Exercise 17A

Exercise 17(A) page: 642

1. The following table shows the number of students participating in various games in a school.

Game

Number of students

Cricket

27

Football

36

Basketball

18

Tennis

12

Draw a bar graph to represent the above data.

Solution:

Take games on the X axis and the number of students on Y axis.

Consider 1 small square = 3 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 1

2. On a certain day, the temperature in a city was recorded as under:

Time

Temperature in oC

 5 am

20

 8 am

24

 11 am

26

 3 pm

22

 6 pm

18

Illustrate the data by a bar graph.

Solution:

Take timings on the X axis and the temperatures on Y axis.

Consider 1 small square = 5 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 2

3. The approximate velocities of some vehicles are given below:

Name of vehicle

Velocity (in km/ hr)

Bicycle

27

 Scooter

45

 Car

90

 Bus

72

 Train

63

Draw a bar graph to represent the above data.

Solution:

Take vehicles on the X axis and the velocity on Y axis.

Consider 1 small square = 10 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 3

4. The following table shows the favourite sports of 250 students of a school. Represent the data by a bar graph.

Sports

Number of students

Cricket

75

 Football

35

 Tennis

50

 Badminton

25

 Swimming

65

Solution:

Take types of sports on the X axis and the number of students on Y axis.

Consider 1 small square = 10 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 4

5. Given below is a table which shows the year wise strength of a school. Represent this data by a bar graph.

Year

Number of students

2012-13

800

 2013-14

975

2014-15

1100

 2015-16

1400

 2016-17

1625

Solution:

Take year on the X axis and the number of students on Y axis.

Consider 1 big division = 200 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 5

6. The following table shows the number of scooters sold by a dealer during six consecutive years. Draw a bar graph to represent this data.

Year

Number of scooters sold (in thousands)

2011

16

 2012

20

2013

32

 2014

36

2015

40

 2016

48

Solution:

Take year on the X axis and the number of scooters sold on Y axis.

Consider 1 small square = 10 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 6

7. The air distances of four cities from Delhi (in km) are given below:

City

Distance from Delhi (in km)

Kolkata

1340

 Mumbai

1100

Chennai

1700

 Hyderabad

1220

Draw a bar graph to represent the above data.

Solution:

Take city on the X axis and the distance from Delhi on Y axis.

Consider 1 big division = 200 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 7

8. The birth rate per thousand in five countries over a period of time is shown below:

Country

Birth rate per thousand

China

42

 India

35

Germany

14

 UK

28

Sweden

21

Represent the above data by a bar graph.

Solution:

Take countries on the X axis and the birth rate on Y axis.

Consider 1 big division = 5 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 8

9. The following table shows the life expectancy (average age to which people live in various countries in a particular year. Represent the data by a bar graph.

Country

Life expectancy (in years)

Japan

84

 India

68

Britain

80

 Ethiopia

64

Cambodia

62

 UK

73

Solution:

Take country on the X axis and the life expectancy on Y axis.

Consider 1 small square = 10 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 9

10. Given below are the seats won by different political parties in the polling outcome of a state assembly elections:

Political Party

Seats won

A

65

 B

52

C

34

 D

28

E

10

 F

31

Draw a bar graph to represent the polling results.

Solution:

Take political party on the X axis and the seats won on Y axis.

Consider 1 small square = 10 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 10

11. Various modes of transport used by 185 students of a school are given below:

School bus

Private bus

Bicycle

Rickshaw

By foot

640

360

490

210

150

Draw a bar graph to represent the above data.

Solution:

Take mode of transport on the X axis and the number of students on Y axis.

Consider 1 big division = 100 units on the Y axis

The bars should be of same width and space should be sufficient between consecutive bars.

The bar graph is as given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 11

12. Look at the bar graph given below:

RS Aggarwal Solutions for Class 9 Maths Chapter 17 Ex 17A Image 12

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?

Solution:

(i) The bar graph shows the marks obtained by a student in various subjects in an examination.

(ii) The student is very good in mathematics.

(iii) He is poor in Hindi.

(iv) Average marks = (60 + 35 + 75 + 50 + 60)/ 5 = 280/5 = 56.


Access other exercise solutions of Class 9 Maths Chapter 17: Bar Graph, Histogram and Frequency Polygon

Exercise 17B Solutions 16 Questions

RS Aggarwal Solutions Class 9 Maths Chapter 17 – Bar Graph, Histogram and Frequency Polygon Exercise 17A

RS Aggarwal Solutions Class 9 Maths Chapter 17 Bar Graph, Histogram and Frequency Polygon Exercise 17A explains the graphical representation of given data with the help of a bar graph.

Key features of RS Aggarwal Solutions for Class 9 Maths Chapter 17: Bar Graph, Histogram and Frequency Polygon Exercise 17A

  • RS Aggarwal Solutions help students to realize their areas of weaknesses and identify the time required to improve upon them.
  • By solving examples and exercise wise problems using the solutions created by our experts, students can obtain a good academic score.
  • Tips and shortcuts are explained which help students to solve tricky problems faster in the exam.
  • Conceptual understanding is enhanced among students, which is the main aim of preparing solutions.