短語詞組短語regression -line estimate detail 回歸線估計(jì)regression curve line 回歸曲線Regression straight line 回歸直線regression n line 回歸線regression straight line equation 回歸直線方程sample regression line [數(shù)]樣本回歸線least square regression line 最小平方回歸直線provisional regression line detail 臨時(shí)回歸線 返回 regression line