Class Interval | Frequency | Class Interval | Frequency |
0 ? 10 | 3 | 30 ? 40 | 10 |
10 ? 20 | a | 40 ? 50 | b |
20 ? 30 | 15 | 50 ? 60 | 5 |
A) a = 2, b = 15
B) a = 4, b = 17
C) a = 6, b = 19
D) a = 8, b = 21
E) None of these
Correct Answer: A
Solution :
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