现有甲、乙两支球队,每支球队队员身高数据的平均数均为1.70米,方差分别为
、
,则身高较整齐的球队是________ 队(填“甲”或“乙”).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c0a572eabc319dc2156958daa66a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6efd781cc669cc450e7c2900376098a.png)
19-20八年级下·全国·期末 查看更多[2]
更新时间:2021-10-27 14:51:41
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【推荐1】如图是甲、乙两名射由运动员的10次射击训练成绩的折线统计图观察图形,比较甲、乙这10次射击成绩的方差
、
的大小:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/424915478bdebbc7a986c6053dc7e0e8.png)
_____
(填“>”、“<”或“=”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f894079d38a74a358f6ccde34f8a1f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f7b9a473b170d93a2704118980ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/424915478bdebbc7a986c6053dc7e0e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ae7dedde0db7fa168a1577ff68d6c3.png)
![](https://img.xkw.com/dksih/QBM/2019/6/12/2224220157345792/2286818466963456/STEM/742812ea45f54fe2b06d99f694bd0fe7.png?resizew=296)
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【推荐2】甲、乙两选手的射击成绩如图所示,方差分别记为
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e123559f5425d7bb846551073c27e1a.png)
__________
.(填“>”“<”或“=”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e123559f5425d7bb846551073c27e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b38bb78f4f7721ff89c5dcf9c72464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e123559f5425d7bb846551073c27e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b38bb78f4f7721ff89c5dcf9c72464.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/3880a1e7-6dc8-4c95-bf61-645f0d4a2064.png?resizew=400)
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