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the variance of a random variable measures how far from the expected value its values typically are.
随机变量的方差衡量随机变量值与期望值偏离的程度。
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- 相关词组
- registration of withdrawal注销登记;
- at variance有分歧， 不和， 不符;
- axis of gravity重力轴;
- withdrawal of cortical hornone[医]撤停皮质激素;
- Average variable cost平均可变成本，平均变动成本;
- axis of evil邪恶轴心国; 邪恶轴心; 险恶轴心; 邪恶轴心--布什用语; 险恶轴心国;
- withdrawal of signal取消信号;
- withdrawal of orders撤消[回]订单;
- withdrawal of a juror[法] 撤回一名陪审员，要求一名陪审员回避;
- audit of financial statements财务报表审计;
- withdrawal of motion[法] 撤回动议;
- withdrawal of claim[法] 撤回要求;
- withdrawal test of pile拔桩试验;
- axis of symmetry对称轴;
- United States of American. 美国，美利坚合众国;
- axis of ordinates纵坐标轴;
- axis of level水准漆；水准轴；水准管轴
- withdrawal of assets提取资产;
- rate of withdrawal采出速度;
- withdrawal of currency通货回笼;
- 今日热词
- 热门搜索
- enter v.进入;成为…的一员;开始参加;掠过（脑海）;开始进入…;参加;写下;输入，登记;
- digest v.消化;理解;n.摘要;文摘;
- fond adj.喜欢;深情的;愉快的;不切实际的;
- cafeteria n.自助餐厅;食堂;
- fail v.失败;没有做;出故障;倒闭;衰弱;不够;不及格;评定不及格n.考试不及格;
- dessert n.甜点，甜品;
- was v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ）;在，存在;不受干扰;
- viper n.蝰蛇;毒蛇;阴险恶毒的人;奸诈者;
- DNF abbr.did not finish 未完成;地下城与勇士(Does Not Finish)；玩地下城与勇士；地下城与勇士金币
- paraphrase n.释义，意译;演释曲;vt.改述;
- pause v.停顿;暂停放音;n.停顿;延长记号;暂停键;
- persuade v.劝说;使信服;
