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数学思想是数学知识的提炼与升华,是分析问题、解决问题的好帮手.在本章的学习中,我们不仅要学习统计的相关概念,还要体会其中的数学思想.下面举例剖析.一、用样本估计总体的思想例1(2015·海南中考)为了治理大气污染,我国中部某市抽取了该市2014年中120天的空气质量指数,绘制了如下不完整的统计图表:空气质量指数统计表
Mathematical thinking is the refining and sublimation of mathematical knowledge, is a good helper to analyze and solve problems.In this chapter, we not only need to learn the relevant concepts of statistics, but also understand the mathematical ideas in them. In order to control atmospheric pollution, a city in the central part of China extracted the air quality index of the city for 120 days in 2014 and plotted the following incomplete statistics: Air Quality Index Statistical Table