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对于《义务教育数学课程标准(2011年版)》(以下简称“课标(2011年版)”)界定的“统计与概率”部分的内容,青岛版教科书是独立于其他部分单独设计编写的,共有三章,其中统计两章,概率一章,每个年级各安排一章.八年级上册第四章“数据分析”是这三章中的第二章,主要研究平均数(加权平均数)、中位数、众数以及方差等统计量的意义,学习如何利用这些统计量分析数据的集中趋势和离散程度,经历用样本平均数和方差估计
For the content of the “Statistics and Probability” part of “Compulsory Education Mathematics Curriculum Standard (2011 Edition)” (hereinafter referred to as the “Curriculum Standard (2011 Edition)”), Qingdao Edition textbooks are written independently of other parts , There are three chapters, including two chapters in statistics, one chapter in probability and one chapter in each grade.Chapter IV of the eighth grade, “Data Analysis”, is the second chapter of the three chapters, the main study average Weighted mean), median, mode, and variance, to learn how to use these statistics to analyze the central tendency and dispersion of data, to experience the use of sample mean and variance estimates