Bulletin of the National Research Centre

Table 2 Suggested model summary statistics

From: Application of response surface methodology for color removing from dyeing effluent using de-oiled activated algal biomass

Source	SD^a	R²	R² adj^b	R² pred^c	PRESS^d	SS Prob > F^e	Lack of fit Prob > F^f
Linear	4.96	0.72	0.67	0.51	686.73	0.0001	0.0020
2F1	5.50	0.72	0.59	0.42	820.17	0.9999	0.0010
Quadratic	1.79	0.97	0.96	0.94	191.53	< 0.0001	0.1515	Suggested
Cubic	1.26	0.99	0.98	0.94	193.63	0.0816	0.5229	Aliased

^aStandard deviation
^bAdjusted residual squared
^cPredicted residual squared
^dPredicted residual error sum of squares
^eSequential model sum of the squares probability function
^fLack of fit probability function

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