Each independent variable had coded levels of 2, 1, 0, 1 and 2. The experimental designs of the coded (x) and actual (X) levels of variables are shown in Table 1
Each independentvariable had coded levels of 2, 1, 0, 1 and 2. The experimentaldesigns of the coded (x) and actual (X) levels of variables are shownin Table 1