以下是关于收入(income,单位:千元)和教育年限(educ_y)两个变量的描述统计表和相关系数表:
 
 
| . sum income | educ_y |   |   |   |   | 
| Variable | | | Obs | Mean | Std. Dev. | Min | Max | 
| --------- | 
 | 
 | 
 | 
 | 
 | 
 | 
| income | | | 100 | 9.210656 | 4.583941 | .5 | 21.75 | 
| educ_y | | | 100 | 10.58 | 2.785895 | 0 | 17 | 
| . correlate income educ_y |   |   |   |   | 
| (obs=100) |   |   |   |   |   |   | 
|   | | | income | educ_y |   |   |   | 
| ------------ | 
 | 
 | 
 | 
 |   |   | 
| income | | | 1.0000 |   |   |   |   | 
| educ_y | | | 0.3201 | 1.0000 |   |   |   | 
 
 
请根据上面两个表格的信息,利用 Stata 作为计算器的功能进行计算,计算下表(回归模型)的空白项。然后写出回归直线,并对回归模型(模型拟合指标和回归系数)进行解释。
 
 
| . regress income educ_y |   |   |   |   |   |   | 
| Source | | SS | df | MS | Number of obs = | 100 | 
| -------------+ | ------------------------------ |   |   | F(  1, | 98) | = |   | 
| Model | |   | 1 |   | Prob > F |   | = |   | 
| Residual | |   |   |   | R-squared |   | = |   | 
| -------------+ | ------------------------------ |   |   | Adj R-squared = | 0.0933 | 
| Total | |   |   |   | Root MSE |   | = | 4.3648 | 
 
------------------------------------------------------------------------------
 
income |        Coef.        Std. Err.        t        P>|t|        [95% Conf. Interval]
 
-------------+----------------------------------------------------------------
 
educ_y | _cons |
 
------------------------------------------------------------------------------
不是很能看到上面给出了的两个表,是不是要自己生成数据来求啊?