A、回归直线X的取值范围为(-1,1)
B、所绘回归直线必过点(<img src="https://img.ppkao.com/2016-10/duansiyang/2016100813584485661.gif">,<img src="https://img.ppkao.com/2016-10/duansiyang/2016100813585550537.gif">)
C、原点是回归直线与Y轴的交点
D、所有实测点都应在回归线上
E、实测值与估计值差的平方和必小于零
B、所绘回归直线必过点(<img src="https://img.ppkao.com/2015-08/huhan/201508270956433423.gif">,<img src="https://img.ppkao.com/2015-08/huhan/2015082709565088146.gif">)
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