| Product/Statistic | Control | 10% Replacement | 20% Replacement | 30% Replacement |
| Mean | 4.80a | 5.70b | 6.83c | 7.60b |
| Standard Deviation | 1.13 | 1.48 | 1.49 | 1.58 |
| Median | 8.00 | 7.00 | 7.00 | 7.00 |
| Minimum | 6.00 | 3.00 | 4.00 | 3.00 |
| Maximum | 9.00 | 9.00 | 9.00 | 9.00 |