Methods Graduates from two department of the Anqing medical School in 2005 were surveyed with a self-designed questionnaire and the census method.

方法自行设计调查表，采用普查方法，对安庆卫校2005届两个专业毕业生进行问卷调查。

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Methods: a census method was used to recruit students in grade one and two from a college in Jilin and issuing anonymous questionnaire among the students.

方法：采取普查方法对吉林省某高校的一、二年级学生使用统一调查问卷，自填式的方式进行调查。

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Methods: Census method and sampling survey method were both used to investigate the related data of the second-class large medical equipments in Henan province.

方法：采用普查法和抽样调查法相结合，对河南省乙类大型医用设备的相关资料进行了调查。

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Because the 1990 Census undercounted millions of Americans, mostly minorities, the Clinton administration proposed the sampling method as a way of ensuring a more accurate count in 2000.

ECONOMIST: Sampling is wrong: official