Exercise 9.4
A survey of 120 school students was done to find which activity they prefer to do in their free time.
Preferred activity | Number of students |
Playing | 45 |
Reading story books | 30 |
Watching TV | 20 |
Listening to music | 10 |
Painting | 15 |
Draw a bar graph to illustrate the above data taking scale of 1 unit length = 5 students.
Which activity is preferred by most of the students other than playing?
Answer 1:
Reading story books is preferred by most of the students other than playing.
Question 2
The number of Mathematics books sold by a shopkeeper on six consecutive days is shown below:
Days | Number of books sold |
Sunday | 65 |
Monday | 40 |
Tuesday | 30 |
Wednesday | 50 |
Thursday | 20 |
Friday | 70 |
Draw a bar graph to represent the above information choosing the scale of your choice.
Answer 2:
Question 3:
Following table shows the number of bicycles manufactured in a factory during the years 1998 to 2002. Illustrate this data using a bar graph. Choose a scale of your choice.
Years | Number of bicycles manufactured |
1998 | 800 |
1999 | 600 |
2000 | 900 |
2001 | 1100 |
2002 | 1200 |
(a) In which year was the maximum number of bicycles manufactured?
(b) In which year was the minimum number of bicycles manufactured?
Answer 3:
(a) The maximum number of bicycles manufactures in 2002.
(b) The minimum number of bicycles manufactured in 1999.
Question 4:
Number of persons in various age groups in a town is given in the following table.
Age group | 1 - 14 | 15-29 | 30 - 44 | 45-59 | 60 -74 | 75 and above |
Number of persons | 2 lakhs | 1 lakhs 60 thousands | 1 lakh 20 thousands | 1 lakh 20 thousands | 80 | 40 Thousands |
Draw a bar graph to represent the above information and answer the following questions. (take 1 unit length = 20 thousands)
(a) Which two age groups have same population?
(b) All persons in the age group of 60 and above are called senior citizens. How many senior citizens are there in the town?
Answer 4:
(a) Group 30 – 44 and group 45 – 59 have same population.
(b) 80,000 + 40,000 = 1,20,000 senior citizens are there in the town.