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１直线相关和回归分析基本原理相关和回归分析是研究两个变量之间是否存在直线关系及如何建立回归方程。相关分析主要是判断两变量之间有无线性关系及相关程度而回归分析主要探讨两变量之间定量关系及进行预测和控制。因此，目前一般的统计教科书上多把相关和回归分开论述，但
A linear correlation and regression analysis The basic principles of correlation and regression analysis is to study whether there is a linear relationship between the two variables and how to establish the regression equation. Correlation analysis is mainly to determine the relationship between the two variables and the degree of correlation and regression analysis mainly discusses the quantitative relationship between the two variables and to predict and control. Therefore, the current general statistical textbooks are more related and regression separately discussed