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Example 7: Total number of students of a school in different years is shown in the following
table:
A. Prepare a pictograph to represent the given Number of
data. If the symbol represents 100 students, Years students
answer the following questions: 1996 400
(a) How many times will the symbol 1998 540
be repeated to represent the number of 2000 420
students in the year 2002? 2002 560
(b) How many symbols represent the total 2004 580
number of students for the year 1996?
B. Prepare another pictograph of students using any other symbol each representing
50 students. Which pictograph do you find more informative?
Solution: A. Year Number of students = 100 students
1996
1998
2000
2002
2004
(a) 5 complete and 1 incomplete
(b) 4 times
B. Year Number of students = 50 students
1996
1998
2000
2002
2004
The second pictograph is more informative.
EXERCISE 9.1
1. Following are the numbers of children in 25 families of a colony:
2, 3, 4, 1, 1, 2, 3, 1, 2, 2, 1, 1, 3, 2, 1, 2, 3, 2, 2, 2, 3, 2, 2, 1, 2
Organize the above data and answer the questions.
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