统计主要研究显示生活中的数据,它是通过对数据的收集、整理、描述、分析的刻画,来帮助人们做出合理的推断与决策,是初中数学的重要内容,也是与高中知识联系密切的一部分,因此,统计知识是全国各省市中考必考内容之一,近几年各省市对这部分内容考查力度加大,题型由单一考查统计基本概念的选择题、填 Statistics The main research shows that the data in life is to help people make reasonable inference and decision making by collecting, sorting, describing and analyzing data. It is an important part of junior high school mathematics and is also closely linked with the knowledge of senior high schools Therefore, the statistical knowledge is one of the most important examinations for all provinces and cities in the country. In recent years, provinces and cities have made greater efforts to examine this part of the content. The questions are composed of the multiple choice questions of the basic concepts of statistics,