Table of Contents

Toggle**NCERT Solutions For Class 6 Maths, Chapter 9,** Data Handling, Exercise 9.4 is all about practicing of making bar graphs from given data. Exercise 9.4 class 6 consists of four questions in which data is given and students have to make bar graphs.

## NCERT Solutions For Class 6 Maths, Chapter 9, Data Handling, Exercise 9.4

**Q.1. A survey of 120 school students was done to find which activity they prefer to do in their free time.**

**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**

**Ans: **By taking a scale of 1unit length = 5 students, bar graph is shown:

make same but different.

** **

**Reading story books is preferred by most of the students other than playing.**** **

**Q.2. The number of Mathematics books sold by a shopkeeper on six consecutive days is shown below:**

**Draw a bar graph to represent the above information choosing the scale of your choice.**

**Ans: **By taking a scale of 1unit length = 5 books we may draw a bar graph as given below:

**Q.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.**

**(a) In which year were the maximum number of bicycles manufactured?**

**(b) In which year were the minimum number of bicycles manufactured?**

**Ans: **By taking a scale of 1-unit length = 100 bicycles we may draw a bar graph of above data as follows

**(a) **In the year 2002, maximum number of bicycles were manufactured i.e., 1200 bicycles

(b) In the year 1999, minimum number of bicycles were manufactured i.e., 600 bicycles

**Q.4. Number of persons in various age groups in a town is given in the following table.**

**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?**

**Ans: **By taking a scale of 1 unit length = 20 thousands we may draw a bar graph of above data as follows

(a) The two age groups which have same population are 30-44 and 45-59.

(b) All persons in the age group of 60 and above are called senior citizens.

Therefore,

Number of senior citizens in the town = 80000 + 40000 = 1 lakh 20 thousand

Hence, the number of senior citizens in the town are 1 lakh 20 thousand.