Examination of Experimental Designs and Response Surface Methods for Uncertainty Analysis of Production Forecast: A Niger Delta Case Study

Table 5

Analysis of variance for Box-Behnken model associated with fractional factorial screening design.

Source	Sum of squares	DF	Mean square	-value	Prob >
Model		9		1031.25	<0.0001	Significant
A-PORO		1		881.42	<0.0001
B-PERMX		1		1013.13	<0.0001
C-PERMZ		1		420.69	<0.0001
D-ISW		1		994.28	<0.0001
E-OVISC		1		1806.44	<0.0001
B^2		1		104.26	<0.0001
C^2		1		61.71	<0.0001
D^2		1		3160.24	<0.0001
E^2		1		202.82	<0.0001
Residual		36
Lack of fit		31
Pure error		5	0
Cor. total		45