| Boxplot statistics | |||||
| Variable | lower whisker | lower hinge | median | upper hinge | upper whisker |
| Reading | 58 | 82 | 88.5 | 98 | 117 |
| Maths | 62 | 81 | 91 | 98 | 114 |
| W.Language | 64 | 83 | 92 | 105 | 123 |
| Knowledge | 63 | 83 | 92 | 99 | 119 |
| Skills | 60 | 82 | 90 | 99 | 121 |
| Boxplot Means | |||
| Variable | trimmed mean | unbiased SD | |
| Reading | 88.68 | 12.64 | |
| Maths | 90.17 | 12.52 | |
| W.Language | 93.36 | 14.38 | |
| Knowledge | 91.41 | 12.07 | |
| Skills | 91.19 | 13.9 | |
