E(x)是什么意思
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解决时间 2021-03-10 23:05
- 提问者网友：你给我的爱
- 2021-03-10 20:14
E(x)是什么意思
最佳答案
- 五星知识达人网友：污到你湿
- 2021-03-10 21:29
E(x)指期望。
大体上讲，数学期望（或均值）就是随机变量的平均取值，而方差则刻画了随机变量对它的均值的偏离程度。
大体上讲，数学期望（或均值）就是随机变量的平均取值，而方差则刻画了随机变量对它的均值的偏离程度。
全部回答
- 1楼网友：洎扰庸人
- 2021-03-10 22:26
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Available now at the Nike Store is this new colorway in the ever-popular Nike Air Max LeBron 7 (VII). The shoe sports a predominantly white leather upper,ralph lauren polo shirts, along with subtle red accents including the Nike swoosh,mens gucci low top sneakers, full length sole, and ankle collar. Highlighting these is a woven pattern located along the side panels, which replace the typical flywire design that the silhouette is known to feature. Look for them now as they are retailing for $160.
Also you will like it：
Release Reminder Air Flightposite II LE Black Bl
Nike Toki ND Medium Grey Medium Grey-Blue Sapphire
lacoste shirts Become Mars
- 2楼网友：逃夭
- 2021-03-10 21:45
看一下凸分析就知道怎么回事了～◎◎◎
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