Table 2 Variance analysis of extraction yield regression model
From: Efficient extraction and antioxidant activity of polyphenols from Antrodia cinnamomea
Source model | Sum of squares | df | Mean square | F value | P value Prob > F | Significant |
|---|---|---|---|---|---|---|
336.18 | 14 | 24.01 | 88.22 | < 0.0001 | ||
A–A | 139.35 | 1 | 139.35 | 511.96 | < 0.0001 | |
B–B | 8.01 | 1 | 8.01 | 29.44 | < 0.0001 | |
C–C | 7.28 | 1 | 7.28 | 26.76 | 0.0001 | |
D–D | 0.074 | 1 | 0.07 | 0.27 | 0.60 | |
AB | 1.04 | 1 | 1.04 | 3.82 | 0.07 | |
AC | 0.21 | 1 | 0.21 | 0.78 | 0.39 | |
AD | 1.34E-03 | 1 | 1.34E-03 | 4.93E-03 | 0.94 | |
BC | 0.01 | 1 | 0.01 | 0.04 | 0.85 | |
BD | 0.40 | 1 | 0.40 | 1.47 | 0.24 | |
CD | 0.05 | 1 | 0.05 | 0.19 | 0.66 | |
A2 | 110.75 | 1 | 110.75 | 406.87 | < 0.0001 | |
B2 | 93.84 | 1 | 93.84 | 344.75 | < 0.0001 | |
C2 | 34.34 | 1 | 34.34 | 126.15 | < 0.0001 | |
D2 | 10.43 | 1 | 10.43 | 38.30 | < 0.0001 | |
Residual | 3.81 | 14 | 0.27 | |||
Lack of fit | 1.96 | 10 | 0.20 | 0.42 | 0.88 | Not significant |
Pure error | 1.86 | 4 | 0.46 | |||
Cor total | 339.99 | 28 | ||||
R2 | 0.9888 |