“概率与统计”是初中数学学习的重点和难点之一.近几年来,概率与统计在毕业考试与升学考试中都以较为稳定的分值出现在各省市区的考题中.这部分试题往往难度不是很大,但由于审题不清,或者不能对概念透彻理解,基本解题技能不过关(比如说画树状图条理不清),导致有学生会失分.下面就笔者在教学实践中发现学生在统计与概率问题中容易出现的一些常见的错误举例加以分析:一、生活经验引发的干扰“统计与概率”和学生的生活实际密切相关。虽 “Probability and Statistics” is one of the key and difficult points of junior high school mathematics learning.In recent years, the probability and statistics in the graduation exam and entrance examinations are more stable scores appear in the provinces and cities test questions .This part The test questions are often not very difficult, but because of the exam questions unclear, or can not be a thorough understanding of the concept, the basic problem-solving skills but pass (for example, draw the dendrogram unclear), resulting in a student will lose points. Students are found in the statistical and probabilistic problems prone to some common mistakes are analyzed: First, the interference caused by life experience “Statistics and Probability ” and the students’ actual life are closely related. although