Table 3.

Analysis of variance of designed test results.

Source	Ethylene Conversion		Selectivity		PE production		Yield
	F-value	p-value	F-value	p-value	F-value	p-value	F-value	p-value
Model	36.30	<0.0001	13.73	<0.0001	8.86	0.0003	52.08	<0.0001
A-Al/Ti	51.25	<0.0001	0.0116	0.9160	4.71	0.0508	50.06	<0.0001
B-DCPDS/Ti	75.57	<0.0001	15.06	0.0022	11.88	0.0048	157.63	<0.0001
C-DCM/Ti	0.0291	0.8675	60.22	<0.0001	1.47	0.2485	31.74	0.0001
D-Temp	37.66	<0.0001	0.2904	0.5998	0.9168	0.3572	42.91	<0.0001
AB	8.72	0.0121	2.23	0.1611	25.87	0.0003	2.45	0.1432
AC	38.44	<0.0001	0.5576	0.4696	0.0000	1.0000	42.28	<0.0001
AD	25.19	0.0003	25.41	0.0003	0.1956	0.6662	2.49	0.1407
BC	5.58	0.0359	2.23	0.1611	2.40	0.1476	3.78	0.0758
BD	7.06	0.0209	2.23	0.1611	1.76	0.2093	2.85	0.1171
CD	1.39	0.2605	0.5576	0.4696	20.55	0.0007	0.3346	0.5737
A2	5.43	0.0381	39.08	<0.0001	2.41	0.1463	50.73	<0.0001
B2	27.33	0.0002	55.31	<0.0001	20.93	0.0006	107.39	<0.0001
C2	80.59	<0.0001	37.74	<0.0001	6.09	0.0296	191.35	<0.0001
D2	223.31	<0.0001	5.62	0.0353	25.22	0.0003	312.24	<0.0001
Lack of Fit	2.38	0.3318	25.63	0.0381	1.69	0.4287	3.68	0.2323
R2	0.9769		0.9412		0.9118		0.9838
Adjusted R2	0.9500		0.8727		0.8090		0.9649
Predicted R2	0.8734		0.7631		0.7249		0.9097