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- The expected value of a random variable. 期望值随意可。
- variance of a random variable 随机变量的方差
- The variance of a real-valued random variable is its second central moment, and it also happens to be its second cumulant. 方差用于表示一组数据的离散程度，也就是数据的波动情况。
- The key is the notion of a discrete quantization of a random variable X. 其中的关键是对一个随机变量X进行的离散量化的概念。
- The Shortest Confidence Interval and the Best Two-Side Test of the Variance of a Normal Random Variable 正态总体方差的最短区间估计与最佳双边检验
- Do The Function of A Continuous Type of Random Variable Also Belong To One? 连续型随机变量的函数还是连续型随机变量吗?
- A statistical measure of the variance of two random variables that are observed or measured in the same mean time period. This measure is equal to the product of the deviations of corresponding values of the two variables for their respective means. 协方差在观察或测量同一平均时间的两个任意变量的变化的一个统计值。这个值等于这两变量的各自平均值偏离其相应值的乘积
- Mathematical expectation and variance of random variable with fuzzy probability 模糊概率随机变量的数学期望和方差
- The cake we made was somewhat of a failure. 我们做的蛋糕不大成功。
- Returns the variance of a numeric expression evaluated over a set (unbiased). 返回在某一集合上对数值表达式求得的方差（非偏置填充）。
- Will you partake of a drink with us? 和我们一同喝一杯好吗？
- He doubles the parts of a farmhand and a miner. 在这出戏里他既扮演雇农又扮演矿工。
- The Approximate Calculation of the Expectation and Variance of Continuous Random Variable Functions 连续型随机变量函数的期望和方差的近似计算
- He let himself down slowly by means of a tope. 他借助一根绳子慢慢地下来了。
- He went about in the disguise of a sailor. 他伪装成海员到处流窜。
- The novel unrolls the history of a certain woman. 那本小说揭露了某个女子的过去。
- Returns the variance of a numeric expression evaluated over a set, using an unbiased population. 返回在某一集合上对数值表达式求得的方差（使用非偏置填充）。
- The war was lost because of a shortage of munitions. 战争因军火不足而失败。
- Some variance of temperature is to be expected. 预料气温会有些变化。
- A man appeared at the castle gate in the guise of a woodcutter. 一个男子打扮成樵夫的模样出现在城堡的门口。
