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Question
Collect data on the CBSE result (2016) 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.
| 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.
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