关键词: 人口普查, 人口数据准确性检验, 年龄尾数

Abstract: In the past,almost all the accuracy evaluations of China’s population census data represented a high quality and there was no specific age mantissa orientation.However,the survival-rate analysis of the two censuses shows the existence of systematic errors of demographic data and the age mantissa orientation.In this paper,the author presents a new method to test the accuracy of the population age data,and uses this method to analyze China’s census data to find out that the age mantissa orientation of demographic data does exist.The author also finds that the age mantissa orientation and the error differ from each other in the five times of population censuses.Finally,the author tells us that the first and fifth population census has a better data-accuracy than other censuses.

Keywords: Census, Accuracy Test of Population Data, Age Mantissa