Table 4.
Advanced statistics post hoc analysis.
| Tukey HSD p-Value |
Tukey HSD Inference |
Scheffé p-Value |
Scheffé Inference |
Bonferroni p-Value |
Bonferroni Inference |
Holm p-Value |
Holm Inference |
|
|---|---|---|---|---|---|---|---|---|
| LDPE vs. PE | 0.001 | ** p < 0.01 | 0.000 | ** p < 0.01 | 0.000 | ** p < 0.01 | 0.000 | ** p < 0.01 |
| LDPE vs. PP | 0.024 | * p < 0.05 | 0.032 | * p < 0.05 | 0.027 | * p < 0.05 | 0.018 | * p < 0.05 |
| PE vs. PP | 0.323 | p > 0.05 | 0.356 | p > 0.05 | 0.459 | p > 0.05 | 0.153 | p > 0.05 |
* significant, p < 0.05; ** significant, p < 0.01; HSD-honestly significant difference; LDPE-low-density polyethylene; PE-polyethylene; PP-polypropylene; PET-polyethylene terephthalate.