直线回归方程Yc=a-bx表示( )A.两变量间的关系为正相关B.两变量间关系为负相关C.当自变量X每增加一个单位,因变量的估计值Yc将增加一个b值D.当自变量X每增加一个单位,因变量的估计值Yc将减
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![直线回归方程Yc=a-bx表示( )A.两变量间的关系为正相关B.两变量间关系为负相关C.当自变量X每增加一个单位,因变量的估计值Yc将增加一个b值D.当自变量X每增加一个单位,因变量的估计值Yc将减](/uploads/image/z/14221231-7-1.jpg?t=%E7%9B%B4%E7%BA%BF%E5%9B%9E%E5%BD%92%E6%96%B9%E7%A8%8BYc%3Da-bx%E8%A1%A8%E7%A4%BA%EF%BC%88+%EF%BC%89A.%E4%B8%A4%E5%8F%98%E9%87%8F%E9%97%B4%E7%9A%84%E5%85%B3%E7%B3%BB%E4%B8%BA%E6%AD%A3%E7%9B%B8%E5%85%B3B.%E4%B8%A4%E5%8F%98%E9%87%8F%E9%97%B4%E5%85%B3%E7%B3%BB%E4%B8%BA%E8%B4%9F%E7%9B%B8%E5%85%B3C.%E5%BD%93%E8%87%AA%E5%8F%98%E9%87%8FX%E6%AF%8F%E5%A2%9E%E5%8A%A0%E4%B8%80%E4%B8%AA%E5%8D%95%E4%BD%8D%2C%E5%9B%A0%E5%8F%98%E9%87%8F%E7%9A%84%E4%BC%B0%E8%AE%A1%E5%80%BCYc%E5%B0%86%E5%A2%9E%E5%8A%A0%E4%B8%80%E4%B8%AAb%E5%80%BCD.%E5%BD%93%E8%87%AA%E5%8F%98%E9%87%8FX%E6%AF%8F%E5%A2%9E%E5%8A%A0%E4%B8%80%E4%B8%AA%E5%8D%95%E4%BD%8D%2C%E5%9B%A0%E5%8F%98%E9%87%8F%E7%9A%84%E4%BC%B0%E8%AE%A1%E5%80%BCYc%E5%B0%86%E5%87%8F)
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