| Boxplot statistics | |||||
| Variable | lower whisker | lower hinge | median | upper hinge | upper whisker |
| nonsmokers | 1 | 4 | 6 | 8 | 11 |
| smokers | 1 | 3 | 4 | 5 | 7 |
| Boxplot Notches | |||
| Variable | lower bound | median | upper bound |
| nonsmokers | 5 | 6 | 7 |
| smokers | 3.5 | 4 | 4.5 |
| Boxplot Means | |||
| Variable | trimmed mean | unbiased SD | |
| nonsmokers | 5.88 | 2.67 | |
| smokers | 3.98 | 1.54 | |
