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一、教学预设1.教学目标(1)通过具体生活实例,让学生领悟分类变量的含义;通过探究“吸烟是否与患肺癌有关系”引出独立性检验的问题,会根据收集的数据列出2×2列联表,并会阅读三维柱形图和二维条形图,会粗略判断两个分类变量是否有关系:(2)利用学生身边熟悉的问题引入分类变量是否相关的问题,运用统计学解决问题的一般思路引导学生,通过探索、研究、归纳等形式,让学生经历假设检
First, the teaching prerequisites 1 teaching objectives (1) through specific life examples, so that students understand the meaning of classification variables; by exploring “smoking is associated with lung cancer ” lead to the issue of independence test will be based on data collected List 2 × 2 contingency tables, and read the three-dimensional bar charts and two-dimensional bar charts, will be roughly determine whether the two classification variables are related: (2) the use of familiar problems around the introduction of classification variables is related to the problem , Using statistics to solve the problem of general ideas to guide students, through exploration, research, induction and other forms, so that students experience the hypothesis