| Boxplot statistics | |||||
| Variable | lower whisker | lower hinge | median | upper hinge | upper whisker |
| Pretest | 0 | 0 | 0 | 1 | 1 |
| Posttest1 | 0 | 0 | 1 | 1 | 1 |
| Boxplot Notches | |||
| Variable | lower bound | median | upper bound |
| Pretest | -0.267068744494211 | 0 | 0.267068744494211 |
| Posttest1 | 0.732931255505789 | 1 | 1.26706874449421 |
