关于我国硬币面值的问题

关于我国硬币面值的问题

摘  要

众所周知，我国人民币分币的面值为1分，2分，5分，角币的面值为1角，2角，5角。这种面值的设计是否合理呢？本文用概率统计的知识，根据市场调查的结果，对我国人民币硬币中面值的设计问题作了1些探讨。发现按照期望值最小的设计要求，我国现在的硬币设计方案还不是最优的。
关键词 : 硬币； 面值； 期望 ；方差

Some Problems of Chinese Coin face value

Abstract

As we all know, the Chinese coin face valve are one fen, two fen, five fen, one Jiao, two Jiao and Five Jiao. Whether the design of this coin face value is reasonable? in this paper, according to the results of Submarket investigation, we mainly discuss some problems of Chinese coin face value with the knowledge of probability statistics. With the demand of the minimum mathematical expectation of design, we find that the Present coin design item of China is not the best one. 
Key words: coin, face value, mathematical expectation, variance.