Run
A
B
C
D = A*B
1
-1
1
1
1
2
1
-1
-1
-1
3
-1
1
-1
-1
4
1
1
-1
1
5
-1
-1
1
1
6
1
-1
1
-1
7
-1
1
1
-1
8
1
1
1
1
Central Point
0
0
0
0
Central Point
0
0
0
0
Central Point
0
0
0
0
Table 2:
Experimental design matrix for the 24-1 plan developed for independent factors analyzed in the PG extraction.