Question

3. A teacher wanted to analyse the performance of two sections of students in a mathematics test of 100
marks. Looking at their performances, she found that a few students got under 20 marks and a few got 70
marks or above. So she decided to group them into intervals of varying sizes as follows:
0 - 20.20 - 30. ..., 60 - 70, 70 - 100. Then she formed the following table: Draw histogram from table.
Marks Number of
students
0 - 20
7
20 - 30
10
30 - 40
10
40 - 50
20
50 - 60
20
60 - 70
15
70- above
8
Total
90​

Answer 1

Answer:

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