Page 324 - Start Up Mathematics_8 (Non CCE)

Solution: (a) The given bar graph represents the number of students wearing shoes of different numbers
out of a total of (500 + 300 + 400 + 800 + 500 + 100 + 400) 3,000 selected students.
(b) Students wear shoes of numbers 4, 5, 6, 7, 8, 9 and 10.
(c) Shoe number 7 is worn by maximum number of students. There are 800 students wearing it.
(d) Shoe number 9 is worn by minimum number of students. There are 100 students wearing it.
Example 6: Draw a bar graph for the following data. (NCERT)

Children who prefer School A School B School C
Walking 40 55 15
Cycling 45 25 35

Solution:

Y Scale:
Y-axis: 1 cm = 10 children
Æ Cycling
60 Æ Walking
50
40
Number of children 30
20
10
X
0 School School School
A B C
Mode of transport

EXERCISE 20.3
1. Study the following bar graph and answer the questions that follow:
(a) What is the information
given in the double bar Y
graph? Æ 2006–2007
(b) In which subject has the 80 Æ 2007–2008
performance improved the 70
most? 60
(c) In which subject has the 50
performance deteriorated? Marks obtained by a student 40
30
(d) In which subject is the 20
performance at par? 10
(e) What is the difference X
in the average scores for 0 Maths S.St. Science English Hindi
the year 2006–2007 and Subjects
2007–2008?

2. The following table gives the number of students in class VIII in a school during academic years
1999–2000 to 2003–2004. Represent the data by a bar graph.

Academic year 1999–2000 2000–2001 2001–2002 2002–2003 2003–2004
Number of students 50 75 125 150 200

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