Table 3.
A t-test for the quadratic polynomial models developed for the response variables: total flavonoids (TF), chlorogenic acid (CA) and flavonolignans (FL) of Cecropia sp. mixture.
| Term | TF (Y1) | CA (Y2) | FL (Y3) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Coefficient | Standard error | p-Value | Coefficient | Standard error | p-Value | Coefficient | Standard error | p-Value | |
| Model | <0.0001 | <0.0001 | 0.0028 | ||||||
| Intercept | 1737.8 | 29.3 | 3.48E-16 | 340.7 | 3.64 | 1.50E-18 | 13.96 | 0.302 | 6.82E-15 |
| Linear terms | |||||||||
| X 1 | −106.1 | 10.4 | 2.75E-07 | −22.0 | 1.29 | 8.59E-10 | 0.350 | 0.107 | 0.0066 |
| X 2 | 43.8 | 10.4 | 0.0012 | 14.6 | 1.29 | 8.92E-08 | 0.329 | 0.107 | 0.0094 |
| Quadratic terms | |||||||||
| X 1 2 | −86.9 | 17.2 | 0.0003 | −23.2 | 2.14 | 1.47E-07 | −0.635 | 0.177 | 0.0038 |
| X 2 2 | −6.8 | 17.2 | 0.6980 | −2.40 | 2.14 | 0.2830 | −0.273 | 0.177 | 0.1484 |
| Interaction | |||||||||
| X 1 X 2 | 47.3 | 14.6 | 0.0072 | 1.81 | 1.82 | 0.3400 | −0.161 | 0.151 | 0.3060 |