求翻译：经济学中对变量之间相互关系的研究通常是采用回归分析法，但是对于非平稳的时间序列，直接进行回归分析可能会产生较大的偏差，通常被称为虚假回归，其回归结果毫无意义。为了判断序列的平稳性，常用的方法是进行单位根检验。如果两个变量都不存在单位根，则都是平稳的时间序列，就可以通过一般的回归分析研究它们之间的相关性；如果两个序列存在单位根但阶数不同，则说明两个变量之间不存在相关关系；如果两个序列都存在单位根，并且阶数相同，则需要进行协整关系检验是什么意思？

正在翻译，请等待...

In economics the relationships between variables of the study is usually a regression analysis, however, for non-smooth time-series of regression analysis may be directly produces a larger deviation, which is known as the false return, regression results meaningless. In order to determine the sequen

In the economic the reciprocity research usually uses the return analytic method to the variable between, but regarding the non-steady time series, carries on the regression analysis possibly to be able directly to have the big deviation, usually is called the false return, its return result is mean

Economics study on the relationships between variables in regression analysis method is usually, but for non-stationary time series, regression analysis can result in large deviations directly, often referred to as spurious regression, regression results are meaningless. In order to determine the se

正在翻译，请等待...