当今时代迅猛发展,统计学已明显体现其在现实中的重要价值。随着新课程改革的不断深入,统计学的知识越来越被重视。为了适应时代发展的需要,新课程专门编排了一章统计学内容,中高考必考统计学知识,因此,统计学中涉及到的平均数、中位数、众数与极差、方差、标准差被分别称为“三数”和“三差”。中高考对“三数”与“三差”的考查,也已由原来的单一计算演变为许多应用价值更高的新问题,解答这些问题,需要同学们站在数学思想方法的高度上 With the rapid development of the times, statistics have clearly demonstrated its important value in reality. With the continuous deepening of the new curriculum reform, more and more attention has been paid to statistical knowledge. In order to meet the needs of the development of the times, the new curriculum specially arranges a chapter of statistical content, the college entrance examination will take the knowledge of statistics, therefore, the statistics involved in the average, median, mode and range, variance, standard Differences are called “three numbers” and “three differences” respectively. The examination of the “three numbers” and “three differences” in the college entrance examination has also evolved from the original single calculation into many new problems with higher application value. To answer these questions, students are required to stand in the mathematical way of thinking Height