Table 2 RCCD consisting of three experimental factors in coded and actual levels with experimental results
Formulation | Coded independent variables | Actual independent variables | Dependent variables | |||||
---|---|---|---|---|---|---|---|---|
X 1 | X 2 | X 3 | X 1 | X 2 | X 3 | EE (%) | Mean size | |
1 | 1 | 1 | 1 | 10 | 5.2 | 0.42 | 36.96 | 381.2 |
2 | 1 | 1 | −1 | 10 | 5.2 | 0.18 | 28.12 | 321.1 |
3 | 1 | −1 | 1 | 10 | 2.8 | 0.42 | 42.74 | 510.2 |
4 | 1 | −1 | −1 | 10 | 2.8 | 0.18 | 41.09 | 770.2 |
5 | −1 | 1 | 1 | 4 | 5.2 | 0.42 | 49.08 | 426.3 |
6 | −1 | 1 | −1 | 4 | 5.2 | 0.18 | 44.67 | 371.9 |
7 | −1 | −1 | 1 | 4 | 2.8 | 0.42 | 61.98 | 806.7 |
8 | −1 | −1 | −1 | 4 | 2.8 | 0.18 | 54.10 | 1,216.6 |
9 | +1.682 | 0 | 0 | 12 | 4 | 0.3 | 20.14 | 420.6 |
10 | −1.682 | 0 | 0 | 2 | 4 | 0.3 | 60.50 | 790.1 |
11 | 0 | +1.682 | 0 | 7 | 4 | 0.3 | 32.38 | 362.7 |
12 | 0 | −1.682 | 0 | 7 | 2 | 0.3 | 50.14 | 980.1 |
13 | 0 | 0 | +1.682 | 7 | 4 | 0.5 | 47.22 | 522.2 |
14 | 0 | 0 | −1.682 | 7 | 4 | 0.1 | 32.19 | 539.8 |
15 to 20 | 0 | 0 | 0 | 7 | 4 | 0.3 | 37.38 | 471.1 |