**Question 1:** Use the bar graph to answer the following questions.

(a) Which is the most popular pet?**Answer:** Cat

(b) How many students have dog as a pet?**Answer:** 8

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

- About how many books were sold in 1989? 1990? 1992?
**Answer:**`175 + 475 + 225 = 875` - In which year were about 475 books sold? About 225 books sold?
**Answer:**1990 = 475 books and 1992 = 225 books - In which years were fewer than 250 books sold?
**Answer:**1989 and 1992 - Can you explain how you would estimate the number of books sold in 1989?
**Answer:**The bar is lower than 200 mark but a little higher than halfway mark between 100 and 200. Hence, it should be about 175

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

Class | Fifth | Sixth | Seventh | Eighth | Ninth | Tenth |
---|---|---|---|---|---|---|

No. of children | 135 | 120 | 95 | 100 | 90 | 80 |

**Answer:**

(a) How would you choose a scale?**Answer:** I will select each box as showing 20 students.

(b) Answer the following questions:

- Which class has the maximum number of children? And the minimum?
**Answer:**Fifth class has the maximum number of children, while tenth class has the minimum number of children. - Find the ratio of students of class sixth to the students of class eight.
**Answer:**Number of students in class sixth = 120

Number of students in class eighth = 100

Ratio `= (120)/(100) = 3/4 = 3:4`

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

Subjects | English | Hindi | Maths | Science | S. Science |
---|---|---|---|---|---|

1st term (MM 100) | 67 | 72 | 88 | 81 | 73 |

2nd term (MM 100) | 70 | 65 | 95 | 85 | 75 |

**Answer:**

- In which subject, has the child improved his performance the most?
**Answer:**Maths - In which subject is the improvement the least?
**Answer:**Social Science - Has the performance gone down in any subject?
**Answer:**Yes, in Hindi

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

Favourite sports | Cricket | Basketball | Swimming | Hockey | Athletics |
---|---|---|---|---|---|

Watching | 1240 | 470 | 510 | 430 | 250 |

Participating | 620 | 320 | 320 | 250 | 105 |

**Answer:**

- Draw a double bar graph choosing an appropriate scale.
**Answer:**Refer to above graph. - What do you infer from the bar graph?
**Answer:**Number of people watching a sport is more than number of people participating in it. - Which sport is most popular?
**Answer:**Cricket - Which is more preferred, watching or participating in sports?
**Answer:**Watching a sport is more preferred than participating in it.

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