Class Interval | F |
0 - 10 | 5 |
10 - 20 | 8 |
20 - 30 | 7 |
30 - 40 | 12 |
40 - 50 | 28 |
50 - 60 | 20 |
60 - 70 | 10 |
Answer:
46.67
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