| Design point |
Independent variables
X1 X2 |
Variables in their natural form
X1 (%) X2 (°C) |
| 1 |
1 |
1 |
20 |
100 |
| 2 |
1 |
2 |
20 |
120 |
| 3 |
1 |
3 |
20 |
130 |
| 4 |
2 |
1 |
25 |
100 |
| 5 |
2 |
2 |
25 |
120 |
| 6 |
2 |
3 |
25 |
130 |
| 7 |
3 |
1 |
30 |
100 |
| 8 |
3 |
2 |
30 |
120 |
| 9 |
3 |
3 |
30 |
130 |
|
| X1= Feed Moisture, X2= Barrel Temperature |
| Table 2: Experimental layout with the Coded and Natural values |
