Page 293 - Start Up Mathematics_7

(d) Australia and South Africa

G + B 12 + 10
(e) South Africa;  = = 11 = S
2 2
(f) Bronze medals won by India : Gold medals won by South Africa
= 36 : 12 = 3 : 1

EXERCISE 16.2

1. The following data was gathered during a survey conducted in a school. Construct a bar
graph and answer the following questions:

Favourite sport Athletics Hockey Cricket Shooting Wrestling Badminton
Number of students 500 600 800 700 400 500
(a) What information does this bar graph present?
(b) Which game is most popular among the students?

(c) Which two sports have equal popularity among the students?
2. 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 representing 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. A class teacher was asked to prepare a record of six students of a class. Their performance
in the two terminal examinations out of a maximum of 50 marks is as under:

Student’s name Anubhav Gaurav Harjeet Iqbal Priti Sarika
I Terminal 20 10 8 30 24 42
II Terminal 25 20 15 40 12 27
Construct a double bar graph and answer the following questions:
(a) Which student had shown maximum improvement?
(b) Name the student whose performance has gone down.
(c) Is it correct if the teacher says that Sarika’s performance is a cause of concern inspite
of getting the highest marks among the six students in the 1st terminal examination?
Is there any other student in the same category?
4. In a survey, 300 students were asked about their personal goals and whether they had
achieved them or not. Represent these results in a double graph and answer the following
questions.

Goals Total goals Achieved goals
Owning a bike 250 130
Possessing the latest mobile phone 300 180
Getting admission in a professional college 100 70
Buying a laptop 150 75
Having a business 280 180

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