求翻译：其中， 为常数项； 到 分别为未知参数，称为回归系数， 为不可观测的随机误差，与5个自变量无关；Y为因变量税收收入； 到 分别表示国内生产总值、财政支出、商品零售价格指数。：是什么意思？

Among them, the constant term; were unknown parameters, called the regression coefficients, the random error can not be observed, has nothing to do with the five independent variables; y is the dependent variable tax revenues; to denote the gross domestic product (GDP), fiscal spending, commodities

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Among them, is the absolute term; To respectively is the unknown parameter, is called the regression coefficient, for random error which cannot be observed, has nothing to do with with 5 independent variables; Y is the dependent variable tax revenue income; To expresses GDP, the expenditure, the com

Where is a constant; to the unknown parameters, respectively, called regression coefficients, for not observing the random error, and has nothing to do with 5 arguments; y is the dependent variable tax revenue; that represents GDP, fiscal expenditures, the retail sales index. ：

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