已知随机变量的
的分布列如图所示,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
________ ;若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e60ff3d4d0abd4a75cc521c0267f92e.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169ab04b3efb0b61a1636ac709a35f3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e60ff3d4d0abd4a75cc521c0267f92e.png)
![]() | 0 | 1 | 2 |
p | x | ![]() | y |
2019·浙江绍兴·模拟预测 查看更多[5]
2019届浙江省绍兴市诸暨市高三下学期高考适应性考试数学试题(已下线)专题11.6 离散型随机变量的均值与方差(精练)-2021年新高考数学一轮复习学与练(已下线)专题7.6第七章《随机变量及其分布列》综合测试卷(A卷基础篇)-2020-2021学年高二下学期数学选择性必修第三册同步单元AB卷(新教材人教A版,浙江专用)(已下线)专题4.4 随机变量的数字特征(A卷基础篇)-2020-2021学年高二数学选择性必修第二册同步单元AB卷(新教材人教B版)(已下线)2022年高考押题预测卷02(浙江卷)-数学
更新时间:2020-04-20 20:04:24
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