At a newspaper office, the time required to set the entire front page in type was recorded for 50 days. The data, to the nearest tenth of a minute, are given below.
| 20.8 | 22.8 | 21.9 | 22.0 | 20.7 | 20.9 | 25.0 | 22.2 | 22.8 | 20.1 |
| 25.3 | 20.7 | 22.5 | 21.2 | 23.8 | 23.3 | 20.9 | 22.9 | 23.5 | 19.5 |
| 23.7 | 20.3 | 23.6 | 19.0 | 25.1 | 25.0 | 19.5 | 24.1 | 24.2 | 21.8 |
| 21.3 | 21.5 | 23.1 | 19.9 | 24.2 | 24.1 | 19.8 | 23.9 | 22.8 | 23.9 |
| 19.7 | 24.2 | 23.8 | 20.7 | 23.8 | 24.3 | 21.1 | 20.9 | 21.6 | 22.7 |
- Arrange the data in an array from lowest to highest.
- Construct a frequency distribution and a “less-than” cumulative frequency distribution from the data, using intervals of 0.8 minute.
- Construct a frequency polygon from the data.
- Construct a “less-than” ogive from the data.
- From your ogive, estimate what percentage of the time the front page can be set in less than 24 minutes.
Solutions
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