Class Interval | Frequency |
0 - 10 | 7 |
10 - 20 | 8 |
20 - 30 | 12 |
30 - 40 | 13 |
40 - 50 | 10 |
A) 25.60
B) 24.80
C) 23.30
D) 27.20
E) None of these
Correct Answer: D
Solution :
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