[See Steps] Find the (a) mean and (b) modal class. This frequency distribution represents the data obtained from a sample of 75 copying machine service
Question: Find the (a) mean and (b) modal class.
This frequency distribution represents the data obtained from a sample of 75 copying machine service technicians. The values represent the days between service calls for various copying machines.
| Class boundaries | Frequency |
| 15.5-18.5 | 14 |
| 18.5-21.5 | 12 |
| 21.5-24.5 | 18 |
| 24,5-27.5 | 10 |
| 27.5-30.5 | 15 |
| 30.5-33.5 | 6 |
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