Table 4.

Structural comparisons of CCD (CCC (CCI), CCF) and BBD for three factors.

CCC (CCI)				CCF				Box-Behnken
Rep	X1	X2	X3	Rep	X1	X2	X3	Rep	X1	X2	X3
1	−1	−1	−1	1	−1	−1	−1	1	−1	−1	0
1	+1	−1	−1	1	+1	−1	−1	1	+1	−1	0
1	−1	+1	−1	1	−1	+1	−1	1	−1	+1	0
1	+1	+1	−1	1	+1	+1	−1	1	+1	+1	0
1	−1	−1	+1	1	−1	−1	+1	1	−1	0	−1
1	+1	−1	+1	1	+1	−1	+1	1	+1	0	−1
1	−1	+1	+1	1	−1	+1	+1	1	−1	0	+1
1	+1	+1	+1	1	+1	+1	+1	1	+1	0	+1
1	−1.682	0	0	1	−1	0	0	1	0	−1	−1
1	1.682	0	0	1	+1	0	0	1	0	+1	−1
1	0	−1.682	0	1	0	−1	0	1	0	−1	+1
1	0	1.682	0	1	0	+1	0	1	0	+1	+1
1	0	0	−1.682	1	0	0	−1	3	0	0	0
1	0	0	1.682	1	0	0	+1
6	0	0	0	6	0	0	0
Total Runs = 20				Total Runs = 20				Total Runs = 15

CCC, Circumcentered; CCI, Inscribed; CCF, Face centered; BBD, Box-Behnken.