高中数学中为什么回归方程中用r^2来表示回归直线直线的拟合度,或者说r^2的推出用来表示的意义在哪? 知乎 Template




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tomski高中数学中为什么回归方程中用r^2来表示回归直线直线的拟合度,或者说r^2的推出用来表示的意义在哪? 知乎 coloring