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 |
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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 |
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(obs=100) |
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| | | income | educ_y |
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------------ |
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income | | | 1.0000 |
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educ_y | | | 0.3201 | 1.0000 |
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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 |
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Source | | SS | df | MS | Number of obs = | 100 | ||
-------------+ | ------------------------------ |
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| F( 1, | 98) | = |
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Model | |
| 1 |
| Prob > F |
| = |
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Residual | |
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| R-squared |
| = |
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-------------+ | ------------------------------ |
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| Adj R-squared = | 0.0933 | ||
Total | |
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| 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?


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