Table 1.
Coded and uncoded levels of the independent variables
| Coded levels | Independent variables | |
|---|---|---|
| Time (min) | Temperature (°C) | |
| + 1.41 (+ α) | 350 | 100 |
| + 1 | 300 | 92 |
| 0 | 180 | 76 |
| − 1 | 60 | 60 |
| − 1.41 (− α) | 10 | 53 |
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.