| Figures | Keys | Figures between | Correlation coefficients between | ||
| p | q | n | |||
| 3(b) | 5 | 4 | 7 |
|
|
| 6(a) | 6 | 4 | 7 | 3(b)-6(a) | −0.0019 |
| 6(b) | 5 | 3 | 7 | 3(b)-6(b) | 0.0028 |
| 6(c) | 5 | 4 | 6 | 3(b)-6(c) | 0.0044 |