对图书馆活动中的大量数据进行分析时,统计方法是不可缺少的工具,仅仅用来描述现象的主要特征的数据,其处理方法属于描述性统计学。这类方法包括测定中心趋向(平均数、中位数和品数);测定分散度和变异度(范围、标准偏差、四分点偏差、平均偏差);以及相关检验(包括积矩、双系列、点双系列)等等。分析统计学也称抽样 When analyzing a large amount of data in library activities, statistical methods are indispensable tools for describing data that characterizes only the major features of phenomena, and their treatment is descriptive statistics. Such methods include the determination of center trends (mean, median and number of items); the determination of dispersion and variability (range, standard deviation, quadratic deviation, mean deviation); and correlation tests Point double series) and so on. Analytical statistics are also called samples