- 模型1。- price | β^ = 1.747** | se = 3.465*** (0.1) | (t-value = 3.465.df = 74.00)。- mpg | β^ = -49.51| se = 21.85(86.16) | (t-value = -0.602.df = 74.22)。- 模型2。- price | β^ = 3673.1*** | se = _cons(684.0) | (t-value not shown)。- foreign| β^ = 1946.1 | se = -3377.0 | (t-value not shown)。--------------------------------------。- N| 74|；