Standard A (hour) B % (w/w) C (°C) D (rpm) Actual (%) Predicted (%)
1 3 10 30 100 81.337 82.116
2 8 10 30 100 85.722 85.976
3 3 20 30 100 89.603 89.114
4 8 20 30 100 90.361 91.112
5 3 10 50 100 84.115 83.777
6 8 10 50 100 85.785 86.013
7 3 20 50 100 89.783 89.731
8 8 20 50 100 89.898 90.154
9 3 10 30 200 86.937 86.510
10 8 10 30 200 88.716 89.119
11 3 20 30 200 89.687 89.810
12 8 20 30 200 90.441 90.607
13 3 10 50 200 87.210 86.811
14 8 10 50 200 87.528 87.846
15 3 20 50 200 89.543 89.117
16 8 20 50 200 88.817 88.339
17 0.5 15 40 150 83.149 83.829
18 10.5 15 40 150 87.720 86.861
19 5.5 5 40 150 84.756 84.412
20 5.5 25 40 150 91.688 89.069
21 5.5 15 20 150 90.463 89.748
22 5.5 15 60 150 88.556 89.092
23 5.5 15 40 50 88.019 87.389
24 5.5 15 40 250 89.467 89.918
25 5.5 15 40 150 88.698 89.069
26 5.5 15 40 150 89.657 89.069
27 5.5 15 40 150 88.388 89.069
28 5.5 15 40 150 89.207 89.069
29 5.5 15 40 150 88.966 89.069
30 5.5 15 40 150 89.499 89.069
Table 1: Coded and actual levels of variables for design of experiment