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

Table 6.

ANOVA for specific surface area of phosphoric acid modified RPSAC.

Source Sum of
Squares
df Mean
Square
F
Value
p-value
Prob > F
Model 1.483E+005 14 10590.68 4.30 0.0041 significant
A-Concentration 620.17 1 620.17 0.25 0.6231
B-Impregnation Ratio 308.17 1 308.17 0.13 0.7285
C-Activation Temperature 1.134E+005 1 1.134E+005 46.05 <0.0001
D-Activation Time 32.67 1 32.67 0.013 0.9098
AB 100.00 1 100.00 0.041 0.8430
AC 169.00 1 169.00 0.069 0.7969
AD 650.25 1 650.25 0.26 0.6149
BC 240.25 1 240.25 0.098 0.7591
BD 16.00 1 16.00 6.496E-003 0.9368
CD 16.00 1 16.00 6.496E-003 0.9368
A2 9.33 1 9.33 3.789E-003 0.9517
B2 1848.05 1 1848.05 0.75 0.4000
C2 27288.05 1 27288.05 11.08 0.0046
D2 80.05 1 80.05 0.032 0.8594
Residual 36946.58 15 2463.11
Lack of Fit 36165.25 10 3616.53 23.14 0.0014 significant
Pure Error 781.33 5 156.27
Cor Total 1.852E+005 29

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