| Class Interval | Frequency |
| 0 - 10 | 16 |
| 10 - 20 | 12 |
| 20 - 30 | 9 |
| 30 - 40 | 6 |
| 40 - 50 | 7 |
A) 20.2
B) 21.3
C) 45.5
D) 43.2
E) None of these
Correct Answer: A
Solution :
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