琐论重点调查厦门大学陈仁恩重点调查在过去、现在和将来都不失为重要的统计调查方法，本文琐谈重点调查的一些问题。在国外，把非全面调查全部列入抽样调查的范畴，且依据抽取单位是否按随机原则，分为概率抽样和非概率抽样——有意抽样。从广义上说，重点调查也是非概率... Trivial focus of investigation Chen Ren’n key survey of Xiamen University in the past, present and future are all important statistical methods of investigation, this article briefly talked about some of the issues investigated. Abroad, the non-comprehensive survey all included in the scope of the sample survey, and based on whether the drawing unit according to random principles, divided into probability sampling and non-probability sampling - intentional sampling. In a broad sense, the key survey is also non-prob ...