Research Article
Optimization of Alkali Catalyzed Transesterification of Safflower Oil for Production of Biodiesel
Table 3
Regression coefficient of predicted quadratic polynomial model.
| | Terms | Coefficients | Standard errors | Computed -value | value |
| | Linear | | | | | | β0 | 86.27 | 1.74 | 49.56 | 0.000 | | β1 | 2.80 | 1.16 | 2.43 | 0.036 | | β2 | | 1.16 | | 0.000 | | β3 | | 1.16 | | 0.040 | | Quadratic | | | | | | β11 | | 1.12 | | 0.655 | | β22 | | 1.12 | | 0.001 | | β33 | 0.67 | 1.12 | 0.60 | 0.562 | | Interaction | | | | | | β12 | 1.90 | 1.51 | 1.26 | 0.236 | | β13 | 3.26 | 1.51 | 2.16 | 0.056 | | β23 | | 1.51 | | 0.044 | | 0.909 | | | |
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