在科学研究中，经常要对收集到的数据进行各种统计分析，而分析数据时，大多使用较著名的统计分析软件包，如ＳＡＳ，ＳＰＳＳ等。这些统计分析软件包功能强大，不仅能单变量分析，而且可做各种复杂的多变量分析。然而，在对数据进行处理时，大多是使用简单统计描述，画各... In scientific research, it is often necessary to perform various statistical analyses on the collected data. When analyzing data, most of them use well-known statistical analysis software packages such as SAS and SPSS. These statistical analysis software packages are powerful and can not only perform univariate analysis but also do various complicated multivariate analysis. However, when dealing with data, most of them use simple statistical descriptions to draw each...