1 . 在对具有线性相关关系的两个变量
和
进行统计分析时,得到如下数据:
由表中数据求得
关于
的经验回归方程为
,则以下四个样本点落在经验回归直线下方的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![]() | 4 | ![]() | 8 | 10 | 12 |
![]() | 1 | 2 | 3 | 5 | 6 |
由表中数据求得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61621e01fbddf7c8f7c857ca78ba7e20.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
![]() | 4 | ![]() | 8 | 10 | 12 |
![]() | 1 | 2 | 3 | 5 | 6 |
A.![]() | B.![]() | C.![]() | D.![]() |