题目内容
两个相关变量满足如表：两变量的回归直线方程为
[ ]
A．
=0.56x+997.4
B．
=0.63x﹣231.2
C．
=50.2x+501.4
D．
=60.4x+400.7
=0.56x+997.4B．
=0.63x﹣231.2C．
=50.2x+501.4D．
=60.4x+400.7A
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两个相关变量满足如表：两变量的回归直线方程为（ ）
| k | 10 | 15 | 20 | 25 | 30 |
| y | 1003 | 1005 | 1010 | 1011 | 1014 |
A、
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B、
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C、
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D、
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两个相关变量满足如表：两变量的回归直线方程为（ ）
A．
=0.56x+997.4
B．
=0.63x-231.2
C．
=50.2x+501.4
D．
=60.4x+400.7
| k | 10 | 15 | 20 | 25 | 30 |
| y | 1003 | 1005 | 1010 | 1011 | 1014 |
A．
=0.56x+997.4B．
=0.63x-231.2C．
=50.2x+501.4D．
=60.4x+400.7
两个相关变量满足如表：两变量的回归直线方程为（ ）
A．
=0.56x+997.4
B．
=0.63x-231.2
C．
=50.2x+501.4
D．
=60.4x+400.7
| k | 10 | 15 | 20 | 25 | 30 |
| y | 1003 | 1005 | 1010 | 1011 | 1014 |
A．
=0.56x+997.4B．
=0.63x-231.2C．
=50.2x+501.4D．
=60.4x+400.7
两个相关变量满足如表：两变量的回归直线方程为（ ）
A．
=0.56x+997.4
B．
=0.63x-231.2
C．
=50.2x+501.4
D．
=60.4x+400.7
| k | 10 | 15 | 20 | 25 | 30 |
| y | 1003 | 1005 | 1010 | 1011 | 1014 |
A．
=0.56x+997.4B．
=0.63x-231.2C．
=50.2x+501.4D．
=60.4x+400.7
两个相关变量满足如表：两变量的回归直线方程为（ ）
A．
=0.56x+997.4
B．
=0.63x-231.2
C．
=50.2x+501.4
D．
=60.4x+400.7
| k | 10 | 15 | 20 | 25 | 30 |
| y | 1003 | 1005 | 1010 | 1011 | 1014 |
A．
=0.56x+997.4B．
=0.63x-231.2C．
=50.2x+501.4D．
=60.4x+400.7