Table 3 Box-Behnken design of variables for process optimization
STD order | Factors coded | Response OD480 | |||
|---|---|---|---|---|---|
A | B | C | Actual value | Predicted value | |
1 | −1 | −1 | 0 | 3.492 | 3.562 |
2 | 1 | −1 | 0 | 2.738 | 2.769 |
3 | −1 | 1 | 0 | 2.274 | 2.244 |
4 | 1 | 1 | 0 | 2.536 | 2.466 |
5 | −1 | 0 | −1 | 2.419 | 2.393 |
6 | 1 | 0 | −1 | 2.203 | 2.216 |
7 | −1 | 0 | 1 | 2.574 | 2.561 |
8 | 1 | 0 | 1 | 2.139 | 2.165 |
9 | 0 | −1 | −1 | 3.319 | 3.275 |
10 | 0 | 1 | −1 | 1.945 | 2.002 |
11 | 0 | −1 | 1 | 2.928 | 2.871 |
12 | 0 | 1 | 1 | 2.479 | 2.523 |
13 | 0 | 0 | 0 | 2.013 | 2.075 |
14 | 0 | 0 | 0 | 2.273 | 2.075 |
15 | 0 | 0 | 0 | 1.996 | 2.075 |
16 | 0 | 0 | 0 | 1.892 | 2.075 |
17 | 0 | 0 | 0 | 2.202 | 2.075 |