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. 2021 Jun 12;7(6):e07301. doi: 10.1016/j.heliyon.2021.e07301

Table 5.

ANOVA for carbon yield of phosphoric acid modified RPSAC.

Source Sum of
Squares
Df Mean
Square
F
Value
p-value
Prob > F
Model 441.23 14 31.52 4.76 0.0024 significant
A-Concentration 0.79 1 0.79 0.12 0.7342
B-Impregnation Ratio 61.06 1 61.06 9.22 0.0083
C-Activation Temperature 204.28 1 204.28 30.86 <0.0001
D-Activation Time 0.011 1 0.011 1.702E-003 0.9676
AB 0.012 1 0.012 1.828E-003 0.9665
AC 61.23 1 61.23 9.25 0.0082
AD 3.48 1 3.48 0.53 0.4797
BC 9.64 1 9.64 1.46 0.2462
BD 6.58 1 6.58 0.99 0.3346
CD 2.53 1 2.53 0.38 0.5458
A2 26.85 1 26.85 4.06 0.0623
B2 2.10 1 2.10 0.32 0.5814
C2 18.41 1 18.41 2.78 0.1161
D2 67.88 1 67.88 10.25 0.0059
Residual 99.29 15 6.62
Lack of Fit 26.76 10 2.68 0.18 0.9886 not significant
Pure Error 72.53 5 14.51
Cor Total 540.52 29

Values of “Prob > F” <0.05 will implies that the model terms are significant.