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Section A | Section B | ||
Marks | Frequency | Marks | Frequency |
0 - 10 | 3 | 0 - 10 | 5 |
10 - 20 | 9 | 10 - 20 | 19 |
20 - 30 | 17 | 20 - 30 | 15 |
30 - 40 | 12 | 30 - 40 | 10 |
40 - 50 | 9 | 40 - 50 | 1 |
Answer :
We can find the class marks Of the given class intervals by using the following formula.
\(Class mark = \frac{Upper Class Limit + Lower Class Limit}{2}\)
Section A | Section B | ||||
Marks | Class Marks | Frequency | Marks | Class Marks | Frequency |
0 - 10 | 5 | 3 | 0 - 10 | 5 | 5 |
10 - 20 | 15 | 9 | 10 - 20 | 15 | 19 |
20 - 30 | 25 | 17 | 20 - 30 | 25 | 15 |
30 - 40 | 35 | 12 | 30 - 40 | 35 | 10 |
40 - 50 | 45 | 9 | 40 - 50 | 45 | 1 |