Mathematics · Statistics
| x | 5 | 10 | 15 | 20 | 25 | 30 |
|---|---|---|---|---|---|---|
| f | 3 | 5 | 6 | 2 | 1 | 3 |
- 114.5
- 212.5
- 315.5✓
- 413.5
Correct answer
15.5
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