集中趋势测度中的几个问题探析

Exploration on the Measurement of Central Tendency

集中趋势的测度是描述统计学的重要内容。为了测定数据的集中趋势,统计学家设计了许多方法,主要有:不同的变量类型和次数分布类型,决定了不同的集中趋势测度方法;个体量与总量的不同对应关系,决定了数值平均数的不同计算方法;研究目的不同,研究对象的特点不同,决定了平均发展速度测度时的不同设计方法。充分体现了统计的科学性和艺术性。

Measurement of central tendency is the key content in statistics. Statisticians put forward many methods to measure the central tendency in data, which are scientific and artistic. First, methods to measure the central tendency in data are decided by the different types of variables and their distribu- tions. Second, they are decided by the relation between individual value and population value. Third, they are designed according to different rasearch purpose in the measure of mean development speed.