The survey covers a representative sample of the population.

这次调查包括有代表性的人口样本。

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This paper made empirical research on the relationship between the labor migration and urban unemployment in China according to the sample survey data of 1% population in 2005.

本文通过2005年1%人口抽样调查数据对我国劳动力流动与城市失业之间的关系进行了经验研究。

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Methods The grouped random sampling rule survey was carried out in a sample population of 8757 who lived in seaside district of Rongcheng city.

方法采用整群随机抽样方法，抽取荣成市沿海地区8757名渔民为调查对象。

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The survey researchers and statisticians associated with the government were committed to obtaining a representative sample of the U.S. population in order to provide a true reflection of the country.

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