Source Coefficient of estimation Sum of squares DF Mean squares f-value p-value
prob>f
Model 30.83 455.26 9 50.58 6.27 0.0003*
X1 1.03 29.19 1 29.19 3.62 0.0717
X2 2.83 218.24 1 218.24 27.04 <0.0001
X3 2.08 118.54 1 118.54 14.69 0.0010
X12 -0.27 0.90 1 0.90 0.11 0.7422
X12 -1.76 37.42 1 37.42 4.64 0.0437
X12 -0.021 5.559E-003 1 5.559E-003 6.886E-004 0.9793
X1 X2 0.90 12.96 1 12.96 1.61 0.2197
X1 X3 0.19 0.60 1 0.60 0.075 0.7875
X2 X3 -0.86 11.75 1 11.75 1.46 0.2418
Residual   161.44 20 8.07    
Lack of Fit   106.27 5 21.25 5.78 0.0036*
Pure error   55.17 15 3.68    
Corrected Total   616.69 29      
Std. Dev   2.84        
R2   0.7382        
Adj R2   0.6204        
Pred. R2   0.4315        
Adeq. Precision   8.447        
CV%   9.81        
DF – Degrees of Freedom, *- 5% level of significant
Table 4: ANOVA for response surface quadratic model for osmotic dehydration of pineapple- water loss.