Page 260 - ICSE Math 7

EXERCISE 22.2

1. The following data was gathered during a survey conducted in a school.

Favourite sport Hockey Cricket Shooting Wrestling Badminton
Number of students 500 800 700 400 500

Construct a bar graph to represent the given data and answer the following questions.
(a) What information does this data represent?
(b) Which game is most popular among the students?
(c) Which two sports have equal popularity among the students?
2. The average monthly attendance of a class is tabulated below.

Month September October November December January February March
Attendance 50 45 53 50 40 25 55

Construct a bar graph to represent the above data and answer the following questions.
(a) In which month was the average attendance maximum?
(b) In which month was the average attendance minimum?
(c) Find the range of the data.

3. The table given below shows the marks of 6 students scored out of 50 in two tests.

Student’s name Anubhav Gaurav Harjeet Iqbal Priti Sarika
Marks scored in I test 20 10 8 30 24 42
Marks scored in II test 25 20 15 40 12 27

Construct a double bar graph to represent the data and answer the following questions.
(a) Which student had shown maximum improvement? (Hint: compare the % increase in the
marks scored by each student.)
(b) Name the student whose performance has gone down.
(c) Is it correct to say that Sarika’s performance is a cause of concern inspite of getting the highest
marks among the 6 students in the I test? Is there any other student in the same category?
4. In a survey, students were asked about their personal goals and whether they had achieved them
or not. The table below shows the collected data.

Goals Total goals Achieved goals
Getting admission in a professional college 300 190
Join an educational club 280 190

Participate in a state level quiz competition 250 130
Participate in Math Olympiad 100 70
Given free tuitions to poor children 150 75

Represent this data in a double bar graph and answer the following questions.

(a) Which goal is possessed by the maximum and minimum number of students?
(b) Which goal has the highest rate of being fulfilled?
(c) Which two goals have equal chances of being fulfilled?

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