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《浙江统计》1999年第三期刊登了姜培耕同志撰写的“对‘确定性变量’的质疑”的文章（简称姜文），读后引起了我们对此问题的兴趣。姜文提到中国人民大学主编的《社会经济统计学原理教科书》和宋光辉等主编的概计学》认为，变量按其性质可分为确定性变量和随机变量两种。并对?
The article titled “Questioning ’Deterministic Variables’” written by Comrade Jiang Peigeng in the third issue of “Zhejiang Statistics” (abbreviated as Jiang Wen) in 1999 has aroused our interest in this issue. Jiang Wen referred to the “Statistical Theory of Social and Economic Statistics” edited by Renmin University of China and Song Guanghui’s editor-in-chief’s general theory that the variables according to their nature can be divided into two kinds of deterministic variables and random variables. And right?