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本部分内容是新课标的新增内容,主要考点是线性回归和独立性检验的统计方法. 该部分内容以往主要出现在选择题、填空题中,近年在解答题中也开始出现,要引起重视.本部分内容是新课标的新增内容.主要考点是线性回归和独立性检验的统计方法.高考考查以中、低档题为主,多以选择题、填空题的形式出现,以实际问题为背景,综合考查学习基础知识、应用基础知识、解决实际问题的能力.重点难点重点:①会通过收集现实问题中两个有关联变量的数据作出散点图,并利用散点图直观认识变量间的相关关系;能根据给出的线性回归方程系数公式建立线性回归方程;②了解独立性检验的基本思想、
This part of the content is the new content of the new curriculum standard, the main test point is the statistical method of linear regression and independence test.This part of the content in the past mainly appeared in the multiple-choice questions, fill in the blank, in recent years also began to appear in the answer questions, to pay attention The content of this part is the new content of the new curriculum standard.The main test point is the statistical method of linear regression and independence test.The college entrance examination is mainly in the middle and low grade, mainly in the form of multiple choice, fill in the blank, the actual problem is Background, a comprehensive examination of learning basics, the application of basic knowledge, the ability to solve practical problems.Key points of difficulty: (1) by collecting real data of two variables associated with the scatter plot, and the use of scattergraph intuitive understanding between variables The linear regression equation can be established according to the formula of the linear regression equation coefficient. The basic idea of independence test,