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一、价格的需求弹性系数杨泰芳部长在全国邮电工作会议上指出,“价格不改革,价格偏离价值,价格不反映供需关系,企业就不可能有活力。”那么价格怎样才能正确反映供求关系呢?一般说来,人们常用需求弹性这一概念来表述价格与需求之间的关系。所谓需求弹性,就是价格变化的比例与需求量变化的比例之间的关系。例如当我国电报资费调价后,全国公众电报的业务量有所下降,这说明用户对公众电报的需求是随价格的变化而变化的。这种对应于价格变化的需求变化率就是价格的需求弹性
I. Price elasticity of demand Yang Taifang pointed out in the national conference on post and telecommunications at the National Conference on Posts and Telecommunications: “If the price does not reform, the price deviates from the value and the price does not reflect the relationship between supply and demand, the enterprise can not be viable.” Then how can the price correctly reflect the relationship between supply and demand? In general, people often use the concept of demand elasticity to describe the relationship between price and demand. The so-called demand elasticity, is the relationship between the proportion of price changes and the proportion of changes in demand. For example, when the price of telegraph and telephone tariffs in China decreased, the volume of business of national public telegraphs declined. This shows that the demand of users for public telegraph changes with the price changes. This rate of change in demand corresponding to price change is the price elasticity of demand