名校
解题方法
1 . 对具有线性相关关系的变量
有一组观测数据
,其回归直线方程是:
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d89955535a3c4275aca7d62cbb60e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5408e440b5080b9b5287cdf51e932a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f43d7a11ff809636f570fb011db7923c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-18更新
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176次组卷
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3卷引用:甘肃省嘉谷关市第一中学2020-2021学年高一下学期期中考试数学试题