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Table 3

ANOVA for phosphorus removal

SourceSum of squaresdfMean squareF ValueProb > FComment
Model 2,717.85 301.98 114.19 <0.0001 SD = 1.63 
A: Fe:P 69.03 69.03 26.10 0.0014 Mean = 79.22 
B: speed 78.13 78.13 29.54 0.0010 CV = 2.05 
C: pH 205.03 205.03 77.53 <0.0001 Press = 157.96 
AB 0.25 0.25 0.095 0.7674 R2 = 0.9932 
AC 126.56 126.56 47.86 0.0002 R2(adj) = 0.9845 
BC 1,089.00 1,089.00 411.78 <0.0001 AP = 37.983 
A2 0.053 0.053 0.020 0.8911  
B2 0.63 0.63 0.24 0.6398  
C2 1,144.58 1,144.58 432.79 <0.0001  
Residual 18.51 2.64    
Lack of fit 8.94 2.98 1.24 0.4043  
Pure error 9.57 2.39    
Cor total 2,736.36 16     
SourceSum of squaresdfMean squareF ValueProb > FComment
Model 2,717.85 301.98 114.19 <0.0001 SD = 1.63 
A: Fe:P 69.03 69.03 26.10 0.0014 Mean = 79.22 
B: speed 78.13 78.13 29.54 0.0010 CV = 2.05 
C: pH 205.03 205.03 77.53 <0.0001 Press = 157.96 
AB 0.25 0.25 0.095 0.7674 R2 = 0.9932 
AC 126.56 126.56 47.86 0.0002 R2(adj) = 0.9845 
BC 1,089.00 1,089.00 411.78 <0.0001 AP = 37.983 
A2 0.053 0.053 0.020 0.8911  
B2 0.63 0.63 0.24 0.6398  
C2 1,144.58 1,144.58 432.79 <0.0001  
Residual 18.51 2.64    
Lack of fit 8.94 2.98 1.24 0.4043  
Pure error 9.57 2.39    
Cor total 2,736.36 16     

df, degrees of freedom; SD, standard deviation; CV, coefficient of variation; Press, predicted residual error sum of squares; AP, adequate precision; Cor total, totals of all information corrected for the mean.

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