Data Handling (EXERCISE – 9.4)

  • by

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.