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Table 2 Analysis of variance of response surface quadratic model

From: The optimization of ultrasonic-microwave assisted synergistic extraction of Lotus plumule extract rich in flavonoids and its hypoglycemic activity

Source Sum of squares df Mean squares F-Value p-value Prob > F
Model 1.080943 9 0.1201048 343.8583 < 0.0001
A-Microwave power 0.0000125 1 0.0000125 0.035787 0.8553
B-Ultrasonic power 0.037813 1 0.0378125 108.2566 < 0.0001
C-Extraction time 0.01805 1 0.01805 51.67689 0.0002
AB 0.01 1 0.01 28.62986 0.0011
AC 0.005625 1 0.005625 16.10429 0.0051
BC 0.001225 1 0.001225 3.507157 0.1033
A2 0.071706 1 0.0717063 205.2942 < 0.0001
B2 0.432506 1 0.4325063 1238.259 < 0.0001
C2 0.412501 1 0.4125011 1180.985 < 0.0001
Residual 0.002445 7 0.0003493   
Lack of fit 0.001525 3 0.0005083 2.210145 0.2294
Pure error 0.00092 4 0.00023   
Cor total 1.083388 16    
R2 0.9977