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Table 3

Adequacy of model tested

Sequential model sum of squares
SourceSum of squaresDfMean squareF-valuep-valueRemarks
Mean versus total 1.205 × 105 1.205 × 105    
Linear versus mean 2,241.03 747.01 12.25 0.0004  
2FI versus linear 91.48 30.49 0.43 0.7328  
Quadratic versus 2FI 678.36 226.12 69.11 <0.0001 Suggested 
Cubic versus quadra 18.54 6.18 5.67 0.0635 Aliased 
Residual 4.36 1.09    
Total 1.235 × 105 17 7,264.33    
Model summary statistic 
Source Std Dev. R2 Adjusted R2 Predicted R2 PRESS Remarks 
Linear 7.81 0.7387 0.6784 0.5008 1,514.32  
2FI 8.37 0.7688 0.6302 0.0112 2,999.75  
Quadratic 1.81 0.9925 0.9827 0.9000 303.50 Suggested 
Cubic 1.04 0.9986 0.9943  Aliased 
Sequential model sum of squares
SourceSum of squaresDfMean squareF-valuep-valueRemarks
Mean versus total 1.205 × 105 1.205 × 105    
Linear versus mean 2,241.03 747.01 12.25 0.0004  
2FI versus linear 91.48 30.49 0.43 0.7328  
Quadratic versus 2FI 678.36 226.12 69.11 <0.0001 Suggested 
Cubic versus quadra 18.54 6.18 5.67 0.0635 Aliased 
Residual 4.36 1.09    
Total 1.235 × 105 17 7,264.33    
Model summary statistic 
Source Std Dev. R2 Adjusted R2 Predicted R2 PRESS Remarks 
Linear 7.81 0.7387 0.6784 0.5008 1,514.32  
2FI 8.37 0.7688 0.6302 0.0112 2,999.75  
Quadratic 1.81 0.9925 0.9827 0.9000 303.50 Suggested 
Cubic 1.04 0.9986 0.9943  Aliased 

+Case(s) with leverage of 1.0000: PRESS statistic not defined.

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