目前我国出版的某些统计学教材，在动态分析指标部分，比较普遍地存在着诸如概念模糊、计算错误等问题。本文编录了某些典型的差误实例并作评析。张 冠 李 戴 例1. 某地区从1980年到1985年6月30日的人口数(万人)为：……。求“六五”期间(即1981—1985年)该地区的年平均人数 At present, some statistical teaching materials published in our country have some problems such as vague concept and wrong calculation in the part of dynamic analysis of indicators. This article catalogs some of the typical errors and comments. Zhang Guan Li Dai Example 1. The population of a certain area from 1980 to 30 June 1985 (million) is: .... Find the average annual number of people in this area in the “Sixth Five - Year Plan” period (ie 1981-1985)