【摘要】 文章引入Bernoulli随机变量,研究它的基本运算性质,并尝试借助Bernoulli随机变量的数字特征及其各种运算性质来计算部分离散形随机变量的数学期望及方差。更多还原

【Abstract】 The paper introduces the random variable of Bernoulli and discusses its basic operational quality. The paper also tempts to use the digital characteristic of the random variable of Bernoulli and different kinds of operational qualities to caculate the expectancy and variance dispersion of some random variables of discrete.更多还原