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【多选题】
工人月工资（元）依劳动生产率（千元）变化的回归方程为，这意味着( )A.
劳动生产率为 1000 元时，工资的平均为 130 元
B.
劳动生产率提高 1000 元，工资平均提高 80 元
C.
劳动生产率提高 1000 元，工资平均提高 130 元时
D.
当月工资为 210 时，劳动生产率为 2000 元
E.
劳动生产率提高 500 元时，工资提高 50 元
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