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概率是新教材的一个重要内容,是衔接初等数学与高等数学的重要知识。这部分内容由于问题情境源于实际,贴近生活,所以学生乐学且易于接受;在实际中应用非常广泛,每年高考都占有一席之地。但它与我们以前所学的数学知识有所不同,求解此类问题虽只须加减乘除运算,但因思路灵活,题型繁多,结果不易验证,学生感觉易做但易错。再加上有些问题比较抽象,往往容易发生错误。下面就列举一些常见的错误类别,以提高同学们的辨别能力。一、有关概率的一些基本概念含混不清致错比如“互斥”与“对立”两个概念混淆不清,如果再混杂相互独立事件于其中就更难于分辨了。要准确解答这类问题,首
Probability is an important part of the new textbook. It is an important knowledge that connects elementary mathematics with advanced mathematics. This part of the content from the actual situation, from the actual situation, close to life, so students happy and easy to accept; in practice a very wide range of applications each year, college entrance examination have a place. However, it differs from the mathematical knowledge we have learned before. Although it is only necessary to add, subtract, multiply and divide such problems, it is easy for students to think easy but easy to make mistakes because of their flexible thinking, variety of questions and unreliable results. Coupled with some issues more abstract, often prone to error. Here are some common mistakes listed in order to improve students’ ability to discern. First, some of the basic concepts of probability mixed ambiguity error such as “mutex ” and “opposites ” confusion of the two concepts, if mixed with independent events more difficult to distinguish among them. To accurately answer such questions, first of all