Barely Significant

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extremely significantp < 0.00010.0× alphaqualified
According to the results shown in Table 2 , in the linear terms, pressure (X 1 ), flow (X 2 ), and time (X 4 ) had extremely significant ( p < 0.0001) effects on the yield of RCOO, while the temperature term (X 3 ) was not significant ( p = 0.9802), so its effect on the yield of RCOO was very small.
highly significantp < 0.00010.0× alphaqualifiedgold
Based on the results, it showed that the model is highly significant when the computed F -value is greater than the tabulated F -value and the probability value is low ( p < 0.0001), indicating that the individual terms in each response model were significant on the interaction effect.
highly significantp < 0.00010.0× alphaqualifiedgold
Accordingly, the second-order polynomial equation was established as follows: Y = − 9.16012 + 0.123691 × A + 0.143075 × B + 0.162185 × C − 0.0001375 × A × B − 7.5 × 10 − 5 × A × C + 3 × 10 − 5 × B × C − 0.0014058 × A 2 − 0.0013893 × B 2 − 0.0015433 × C 2 From Table 2 , it is evident that the model’s regression is highly significant ( p < 0.0001), with a lack of fit of 0.3369, exceeding the significance threshold of 0.05.
highly significantp -values of <0.00010.0× alphaqualifiedgold
According to the results, it was observed that quadratic polynomial models were highly significant with the low p -values of <0.0001 and the high F values of 74.90 which suggested that the fitness of this model was very high.