Table of Contents

Toggle## Class 7, Maths, Chapter 3, Exercise 3.3 Solutions

**Q.1. Use the bar graph (Figure) to answer the following questions.**

**(a) Which is the most popular pet? **

**(b) How many students have dog as a pet?**

**Q.2. Read the bar graph (Figure) which shows the number of books sold by a bookstore during five consecutive years and answer the following questions:**

**(i) About how many books were sold in 1989? 1990? 1992?**

**(ii) In which year were about 475 books sold? About 225 books sold?**

**(iii) In which years were fewer than 250 books sold?**

**(iv) Can you explain how you would estimate the number of books sold in 1989?**

**Q.3. Number of children in six different classes are given below. Represent the data on a bar graph.**

**(a) How would you choose a scale?**

**(b) Answer the following questions:**

**(i) Which class has the maximum number of children? And the minimum?**

**(ii) Find the ratio of students of class sixth to the students of class eight**

**Q.4. The performance of a student in 1 ^{st} Term and 2^{nd} Term is given. Draw a double bar graph choosing appropriate scale and answer the following:**

**(i) In which subject, has the child improved his performance the most?**

**(ii) In which subject is the improvement the least?**

**(iii) Has the performance gone down in any subject?**

**Q.5. Consider this data collected from a survey of a colony**

**Q.6. Take the data giving the minimum and the maximum temperature of various cities given in the beginning of this Chapter (Table 3.1). Plot a double bar graph using the data and answer the following:**

**(i) Which city has the largest difference in the minimum and maximum temperature on the given date?**

**(ii) Which is the hottest city and which is the coldest city?**

**(iii) Name two cities where maximum temperature of one was less than the minimum temperature of the other.**

**(iv) Name the city which has the least difference between its minimum and the maximum temperature.**