Independent coded variables
Trials
X
1
X
2
X
3
1
-1
-1
0
2
1
-1
0
3
-1
1
0
4
1
1
0
5
-1
0
-1
6
1
0
-1
7
-1
0
1
8
1
0
1
9
0
-1
-1
10
0
1
-1
11
0
-1
1
12
0
1
1
13
0
0
0
14
0
0
0
15
0
0
0
16
0
0
0
17
0
0
0
Table 2:
Box-Behnken design.
