Class 6 - Mathematics : Data Handling
Exercise : 9.4
Top Block 1
NCERT Solutions Class 6 Mathematics Data handling 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 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 :
Question: 2.The number of mathematics books sold by a shopkeeper on six consecutive days is shown below:
| Days | Sunday | Monday | Tuesday | Wednusday | Thursday | Friday |
|---|---|---|---|---|---|---|
| No. of books sold | 65 | 40 | 30 | 50 | 20 | 70 |
Draw a bar graph to represent the above information choosing the scale of your choice.
Answer :
Mddle block 1
Question: 3.Following shows the number of bicycles manufactured in a factory during the year 1998 to 2002. Illustrate this data using a bar graph. Choose a scale your choice.
| Years | Number of bicycles manufactured |
|---|---|
| 1998 | 200 |
| 1999 | 600 |
| 2000 | 900 |
| 2001 | 1100 |
| 2002 | 1200 |
(a)In which year were the maximum number of bicycles manufactures?
(b)In which year were the minimum number of bicycles manufactured?
Answer :
| Chapter 1 : Knowing our Numbers – Exercise 1.1 |
| Chapter 1 : Knowing our Numbers – Exercise 1.2 |
| Chapter 1 : Knowing our Numbers – Exercise 1.3 |
| Chapter 2 : Whole Numbers – Exercise 2.1 |
| Chapter 2 : Whole Numbers – Exercise 2.2 |
| Chapter 2 : Whole Numbers – Exercise 2.3 |
(b) 1999
Question: 4.Number of persons in various age groups in a town is given in the following table:
| Age Group | Number of persons |
|---|---|
| 1 – 14 | 2 Lakhs |
| 15 – 29 | 1 lakh 60 thousands |
| 30 – 44 | 1 lakh 20 thousands |
| 45 – 59 | 1 lakh 20 thousands |
| 60 – 74 | 80 thousands |
| 75 and above | 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 :
(b) 80,000 + 40,000 = 1,20,000