论文部分内容阅读
统计与概率在中考的选择题、填空题和解答题中都有可能出现,主要考查统计、概率的概念和一些简单的计算.例1(2016·盐城)下列调查中,最适宜采用普查方式的是().A.对我国初中学生视力状况的调查B.对量子科学通信卫星上某种零部件的调查C.对一批节能灯管使用寿命的调查D.对“最强大脑”节目收视率的调查【分析】调查方式的选择需要将普查的局限性和抽样调查的必要性结合起来,具体问题
Statistics and Probability In the multiple choice test, fill in the blank questions and answer questions are likely to occur, the main test statistics, the concept of probability and some simple calculations .Example 1 (2016 · Yancheng) The following survey, the most appropriate method of using the census is (A) of the investigation of the eyesight situation of junior high school students in our country B. the survey of certain components and parts of the quantum science communication satellite C. the investigation of the service life of a batch of energy-saving lamps D. the investigation of the “strongest brain” program Survey of ratings [Analysis] The choice of survey methods needs to combine the limitations of the census with the need for sampling surveys. Specific issues