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.
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.