【摘要】 本文考虑线性同归模型Ｙ＝Ｘβ＋ε，Ｅ（ε）＝０，Ｃｏｖ（ε）中数据变换Ｚ＝Ａ′Ｙ对回归系数估计的影响，得到了影响的下界，并且建立了它与相关系数间的关系．更多还原

【Abstract】 Abstract For the linear regression model Y=Xβ+ε,E(ε)=0We consider the influence of linear transformations Z=AY on estimate of the regression coefficient,we get the lower bound of influence,and build relation between influence and coefficient of correlation,更多还原