两项相关及其应用杭州商学院李金昌社会经济按变量的性质不同可分为两类：一类是其变量可以用具体数值表示它们之间的相关关系，如人均收入与食品支出之间的相关等，称之为数值变量相关；另一类是其变量不能或不完全能用具体数值表示它们之间的相关关系，如是否为文盲与是... Two related and its applications Hangzhou Business School Li Jinchang socio-economic according to the different nature of the variables can be divided into two categories: one is that its variables can be used to represent the specific numerical correlation between them, such as per capita income and food expenditures between Related, etc., called the numerical variables related; the other is that its variables can not or can not be used to indicate the specific numerical correlation between them, such as whether it is illiterate and is ...