Table 1.
Factors and factor levels studied in a Box–Behnken experimental design
| |
|
|
Levels |
|
|---|---|---|---|---|
| Factors | Low (-1) | Medium (0) | High (1) | |
|
X
1
|
D/P |
0.05 |
0.13 |
0.2 |
|
X
2
|
W/O |
0.25 |
0.38 |
0.5 |
| X 3 | %PVA | 0.1 | 0.55 | 1 |
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