随着课程改革的深入,统计知识越来越受人们的关注.近几年来有关统计的试题在中考中频繁出现,归纳起来主要有如下几种类型. 一、统计概念问题解答统计概念问题的关键在于了解总体、样本、个体和样本容量及它们之间的关系,掌握众数、中位数和平均数的计算,学会用样本特征数去估计相应的总体特征数. With the deepening of curriculum reform, statistical knowledge is increasingly drawing people’s attention. In recent years, statistics related to test questions have appeared frequently in the middle school entrance examination, and they have been summarized in the following types. I. Statistical Concepts Questions Answers Keys of Statistical Concept Problems It is to understand the population, the sample, the individual and the sample size and the relationship among them, to master the calculation of the mode, median and average, and to learn to use the sample feature number to estimate the corresponding overall feature number.