...om variable : 相关[连]随机变量 interchangeable random variable : 可换随机变量 moment of random variable : 随机变量的矩，随机变量的动差 ..
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3方差的专业定义是随机变量的二次中心矩，与期望值之差的平方的加权平均值。
The technical definition of variance is the random variable's second central moment, the weighted average of the square of the differences from the expected value.
另一方面讨论了随机利率下的一些离散年金、连续年金和连续生存年金现值随机变量的一阶和二阶原点矩及其方差。
On the other hand, the moment, the second moment and variance of the present value random variables about some life annuities and annuities with random interest rate are gotten.
绝对连续随机变量列的记录次数的计数过程的矩精确完全收敛性的一般化定理。
The paper gives the quadrature's precision and complete convergence general theorem, which is about the i.
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