| Variables | P.L (%) | L.L (%) | PI (%) | M.C (%) | S.G | M.D.D (%) | O.M.C (%) | CBR (%) |
| P.L (%) | 1.00 | |||||||
| L.L (%) | 0.95 | 1.00 | ||||||
| PI (%) | 0.84 | 0.93 | 1.00 | |||||
| M.C (%) | −0.01 | 0.07 | 0.12 | 1.00 | ||||
| S.G | −0.10 | 0.02 | −0.10 | −0.61 | 1.00 | |||
| M.D.D (%) | −0.33 | −0.24 | −0.29 | −0.51 | 0.88 | 1.00 | ||
| O.M.C (%) | 0.25 | 0.15 | 0.22 | 0.54 | −0.92 | −0.95 | 1.00 | |
| CBR (%) | −0.10 | 0.01 | −0.08 | −0.55 | 0.96 | 0.91 | −0.97 | 1.00 |