Class | Frequency |
5 - 10 | 5 |
10 - 15 | 6 |
15 - 20 | 15 |
20 - 25 | 10 |
25 - 30 | 5 |
30 - 35 | 4 |
35 - 40 | 2 |
40 - 45 | 2 |
Answer:
19.50
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