对离散数据（xi,yi）,i=1,2,...,6，经计算有Σxi=3.5，Σyi=72.6，Σxi2=4.27，Σyi2=753.2,Σxiyi=114.26，线上回归方程可表示为 A: [img=141x27]1803b4f569d42d1.jpg[/img] B: [img=152x27]1803b4f571dd45b.jpg[/img] C: [img=140x27]1803b4f57974549.jpg[/img] D: [img=151x27]1803b4f5837b70b.jpg[/img]
对离散数据（xi,yi）,i=1,2,...,6，经计算有Σxi=3.5，Σyi=72.6，Σxi2=4.27，Σyi2=753.2,Σxiyi=114.26，线上回归方程可表示为 A: [img=141x27]1803b4f569d42d1.jpg[/img] B: [img=152x27]1803b4f571dd45b.jpg[/img] C: [img=140x27]1803b4f57974549.jpg[/img] D: [img=151x27]1803b4f5837b70b.jpg[/img]
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