Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Coded levels for independent variables used in developing experimental data
| Code | Level | |||||
|---|---|---|---|---|---|---|
| Factor | -α (−1.68) | −1 | 0 | 1 | α (1.68) | |
| Feed Moisture (%) | X1 | 14.98 | 16 | 17.5 | 19 | 20.02 |
| Die Temperature (°C) | X2 | 104.77 | 115 | 130 | 145 | 155.23 |
| Screw Speed (rpm) | X3 | 11.91 | 150 | 200 | 250 | 284.09 |
