1 . 在一组样本数据中,1,3,5,7出现的频率分别为
,
,
,
,且
,若这组数据的中位数为2,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671398cefc5ec05521efd88b1afc89f5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc119550ce4fc5f3d1daf996e7243bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53dbfad83d7e268a474fcf260c3df37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671398cefc5ec05521efd88b1afc89f5.png)
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2022-11-28更新
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4卷引用:辽宁省沈阳市五校协作体2021-2022学年高三上学期期中联考数学试题