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Table 14 ANOVA for response surface quadratic model for intercept

From: Brette Pearl Spar Mable (BPSM): a potential recoverable catalyst as a renewable source of biodiesel from Thevetia peruviana seed oil for the benefit of sustainable development in West Africa

Term Coefficient Standard Error Coefficient 95% CI Low 95% CI High T- Value P- Value VIF
Constant 58.00 0.1180 57.712 58.288 492.15 0.000 -
X1 -8.375 0.0722 -8.5516 -8.1984 -116.05 0.000 1.00
X2 0.75 0.0722 0.5734 0.9266 10.39 0.000 1.00
X3 -4.875 0.0722 -5.0516 -4.6984 -67.55 0.000 1.00
X12 0.25 0.1060 -0.01 0.51 2.35 0.057 1.01
X22 11.00 0.1060 10.74 11.26 103.55 0.000 1.01
X32 11.25 0.1060 10.99 11.51 105.9 0.000 1.01
X1 X2 0.25 0.1020 0.00 0.50 2.45 0.050 1.00
X2 X3 -0.25 0.1020 -0.50 0.00 -2.45 0.050 1.00