Table 3 Parameter estimates for factorial design experiments.
Effect | Parameter estimate | Standard error | Computed t-value | P-value |
|---|---|---|---|---|
Intercept | 291.3337 | 3.607650 | 80.75441 | 0.000000 |
X 1 | 13.4264 | 2.393452 | 5.60964 | 0.000225 |
X 1 2 | -8.4081 | 2.329651 | -3.60917 | 0.004775 |
X 2 | 12.4057 | 2.393452 | 5.18320 | 0.000411 |
X 2 2 | -6.9412 | 2.329651 | -2.97951 | 0.013819 |
X 3 | 8.0471 | 2.393452 | 3.36213 | 0.007216 |
X 3 2 | -14.8942 | 2.329651 | -6.39332 | 0.000079 |
X1*X2 | -1.8750 | 3.127355 | -0.59955 | 0.562145 |
X1*X3 | -0.6250 | 3.127355 | -0.19985 | 0.845604 |
X2*X3 | 8.1250 | 3.127355 | 2.59804 | 0.026581 |