“权”到底是什么?教材上没有具体的概念——新教材淡化了很多概念的严密叙述.“权”的意思来自“权重”.打个形象的比喻,比方说每个人在这个社会中的“权”不一样,也就是重要性、分量不一样,所以说起话,做起事来,让人信服的程度就不一样.在数学中,“权”指某种成分占总体的比重.它有以下几种表现形式:(1)直接以数据的个数的形式给出;(2)以比例的形式给出;(3)以百分数的形式给出.下面结合实例说明“权”的形式以及如何进行加权平均数的计算. “Right ” in the end is not what? The textbook does not have a specific concept - the new text has played down a lot of the concept of tight narrative. “Weight ” means from “weight ” image of the analogy, for example, every Individuals in this society “right ” is not the same, that is, the importance of the weight is not the same, so talking, doing things, convincing the degree is not the same.In mathematics, “Refers to the proportion of a component of the total.It has the following manifestations: (1) directly in the form of the number of data given; (2) given in the form of proportion; (3) as a percentage of the form The following combination of examples to illustrate the ”right" form and how to calculate the weighted average.