英语翻译
问题描述：
英语翻译
The second main section of the paper employs the instrument to investigate the impact of trade on income.We estimate cross-country regressions of income per person on international trade and country size by instrumental variables,and compare the results with ordinary least-squares estimates of the same equations.There are five main findings.
答
第二个主要部分文件采用了文书,调查的影响,贸易对收入.我们估计,跨国家回归的人均收入在国际贸易和国家大小的工具变量,比较的结果与普通最小二乘估计相同方程.有5个主要的调查结果.