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右表提供了某厂节能降耗技术改造后生产A产品过程中记录的产量x(吨)与相应的生产能...
右表提供了某厂节能降耗技术改造后生产A产品过程中记录的产量x(吨)与相应的生产能耗y(吨标准煤)的几组对应数据.根据下表提供的数据,求出y关于x的线性回归方程为
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=0.7x+0.35,那么表中t的值为( )
A.3
B.3.15
C.3.5
D.4.5
考点分析:
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C.
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D.
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B.2
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