Data Handling
EXERCISE – 9.4
EX 9.4 QUESTION 1.
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 T.V | 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?
Solution:
EX 9.4 QUESTION 2.
The number of Mathematics books sold by a shopkeeper on six consecutive days is shown below:
| Days | Sunday | Monday | Tuesday | Wednesday | Thursday | Friday |
| Number of books sold | 65 | 40 | 30 | 50 | 20 | 70 |
Draw a bar graph to represent the above information choosing the scale of your choice.
Solution:
EX 9.4 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
| Year | Number of bicycles manufactured |
| 1998 | 800 |
| 1999 | 600 |
| 2000 | 900 |
| 2001 | 1100 |
| 2002 | 1200 |
(a) In which year were the maximum number of bicycles manufactured?
(b) In which year were the minimum number of bicycles manufactured?
Solution:
(a) In the year of 2002, the maximum number of bicycles were manufactured.
(b) In the year of 1999, the minimum number of bicycles were manufactured.