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Table 4

ANOVA for the regression model for Cu2+ adsorption efficiency (Y1)

SSDFMSF-valuep-value
Model 4,268.88 711.48 146.03 <0.0001 
Residual 38.98 4.87   
Lack of fit 12.38 2.06 0.1551 0.9680 
Pure error 26.60 13.30   
Total 4,307.86 14    
SSDFMSF-valuep-value
Model 4,268.88 711.48 146.03 <0.0001 
Residual 38.98 4.87   
Lack of fit 12.38 2.06 0.1551 0.9680 
Pure error 26.60 13.30   
Total 4,307.86 14    

R2 = 0.9910, adjusted R2 = 0.9842, and predicted R2 = 0.9784.

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