Marks | No. of students |
less than 10 less than 20 less than 30 less than 40 less than 50 less than 60 less than 70 less than 80 | 7 21 34 46 66 77 92 100 |
Answer:
By the given question
Here maximum frequency is 20 and the corresponding class is 40-50.
So, 40-50 is the modal class.
We have,
Mode
Marks (C.I.)
No. of
students
0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
50 - 60
60 - 70
70 - 80
7 = 7
21 ? 7 = 14
34 ? 21 = 13
46 ? 34 = 12
66 ? 46 = 20
77 ? 66 = 11
92 ? 77 = 15
100 ? 92 = 8
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