【摘要】 针对单方程的经济计量模型从多个可供选择的工具变量出发 ,用它们的估计量的线性组合构造一个最佳工具变量估计量 ,并给出了一个阐述结果的例子更多还原

【Abstract】 In this paper,a best instrumental variable estimator is made up by the linear combination of a few instrumental variables from an equation model of econometrics. An example to illustrate the result is also given.更多还原