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Table 5 ANOVA for response surface quadratic model

From: Effects of alkali solution on the dissolution kinetics and optimization processes of iron from Akwuke ore

Source Sum of Squares df Mean Square F Value p value Prob > F  
Model 502.13 5 100.43 10.97 0.0003 Significant
A-Particle size 3.48 1 3.48 0.38 0.0069  
B-Agitation rate 12.1 1 12.1 1.32 0.008  
AB 1.24 1 1.24 0.14 0.724  
A2 338.45 1 338.45 36.98 0.005  
B2 207.77 1 207.77 22.7 0.002  
Residual 64.07 7 9.15    
Lack of Fit 56.97 3 18.99 10.7 0.22 Non-significant
Pure error 7.1 4 1.78    
Cor total 566.2 12     
Std. Dev. 3.03 R2 0.888
Mean 78.61 Adj R2 0.806
C.V. % 3.85 Pred R2 0.869
Press 416.24 Adeq precision 7.241