Collect data on the CBSE result (2018) for class X in your school. Discuss with your teacher how can you present the information in terms of a frequency polygon. Write your observations on the performance of your school students.
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Solution
Marks
(in percentage)
Number of students
10−20
0
20−30
0
30−40
3
40−50
5
50−60
13
60−70
9
70−80
18
80−90
35
90−100
22
We can infer from the above table that most of the students have scored more than 80% marks and only eight students have scored less than 50% marks. Thus, it can be concluded that students have performed outstanding in the Board exams for class X.