Table 8 Fit statistics summary for COD removal efficiency.

From: Sustainable pretreatment and adsorption of chemical oxygen demand from car wash wastewater using Noug sawdust activated carbon

Source

Sequential p-value

Lack of fit p-value

Std. Dev

Mean

C.V %

Model R²

Adjusted R²

Predicted R²

Adeq Precision

Quadratic

< 0.0001

0.126

0.4194

83.8

0.5004

0.9971

0.9945

0.9815

58.679

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