社会经济现象中的平均指标是用来反映各单位某一数量在一定时间、地点条件下所达到的一般水平的指标 .在国民经济统计中平均指标有着十分广泛而重要的作用 ,它不仅反映着总体内各单位变量分布的集中趋势 ,能够比较不同单位的发展水平以说明经济效益或工作质量上的差距 ;而且可 The average index of socio-economic phenomena is an index used to reflect the average level of a certain number of units in a certain time and place. The average index in the national economy has a very broad and important role, which not only reflects the The overall trend of the distribution of variables in each unit can be compared with the level of development of different units to illustrate the economic benefits or the quality of the work on the gap;