Frequency Polygons
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(iv) Behold this incomplete frequency table. Enter the missing values below.
Notes:
- Frequency must be a whole number (e.g. 48)
- CF% may be entered as a number or percent (e.g. 25, 0.25, or 25%)
| # brakes | Frequency | CF% |
| 20 to 29 | 12 | 10% |
| 30 to 39 | 12 | |
| 40 to 49 | 35% | |
| 50 to 59 | 24 | |
| 60 to 69 | 36 | 85% |
| 70 to 79 | 95% | |
| 80+ |