入户调查的目的是摸清人口底数，纠正户口登记项目中的差错，为第六次全国人口普查登记提供准确的基础信息。
The survey aims to count the total number of Beijing residents and to correct false household registration information and provide accurate information for the sixth national census.
事后质量抽查是世界各国在人口普查中普遍采用的用来评估人口普查登记质量的调查方法，是评价数据质量的重要手段之一。
As an important means of evaluation of data quality, post enumeration survey is widely applied in estimating data quality of census in many countries.
事后质量抽查是世界各国在人口普查中普遍采取的用来评估人口普查登记质量的调查方法，是评价数据质量的重要手段之一。
As an important means of data quality evaluation, The Post Enumeration Survey is widely applied in estimating data quality of census in many countries.
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