回归直线 meaning in English

line of regression
regression line

If the observations used in the analysis extend back in time for several years, the resulting regression line may be too steep .
如果在分析中使用的观察值扩大到几年以前，那么推导出的回归直线就会可能太悬殊。
The standard error of estimate, on the other hand, measures the variability, or scatter, of the observed values around the regression line .
而估计值的平均误差，却是度量观察值围绕着回归直线的变化程度或分散程度。
This paper use experimental data to set up linear regression equation with unitary and regression straight line , to use variance analysis and related coefficient to test validity of equation
摘要本文利用实验数据建立一元线性回归方程；回归直线，并用方差分析法和相关系数法检验方程的有效性。