| sd | Mean of Squares | F | Significance (p) |
Material | 1 | 59.811 | 34.925 | <0.001 |
Thickness | 1 | 20.859 | 12.180 | <0.001 |
Background | 1 | 67.511 | 39.421 | <0.001 |
Cement | 1 | 4.060 | 2.370 | 0.126 |
Material * Thickness | 1 | 35.118 | 20.506 | <0.001 |
Material * Background | 1 | 119.754 | 69.926 | <0.001 |
Cement * Cement | 1 | 0.242 | 0.141 | 0.708 |
Thickness * Background | 1 | 56.149 | 32.786 | <0.001 |
Thickness * Cement | 1 | 0.049 | 0.029 | 0.866 |
Background * Cement | 1 | 0.185 | 0.108 | 0.743 |
Material * Thickness * Background | 1 | 1.931 | 1.127 | 0.290 |
Material * Thickness * Cement | 1 | 2.418 | 1.412 | 0.237 |
Material * Background * Cement | 1 | 0.320 | 0.187 | 0.666 |
Material * Background * Cement | 1 | 0.221 | 0.129 | 0.720 |
Material * Thickness * Background * Cement | 1 | 2.194 | 1.281 | 0.260 |