(11济宁师专数学系, 山东济宁 272000 21滕东中学数学组, 山东滕州 2775000) 本文从实践的角度,给出了计算数学期望的几种方法. 关键词: 数学期望; 特征函数 中图分类号: O211 文献标识码: 文章编号:1009 4970(2000)05 02Calculation about Mathmatics Expectation TANGQiu2jing (11Department JiningNormal College Jining272000 21Tengdong Middle School Tengzhou277500 China)Abstract authorsgave several methods about mathmaticsexpectation. Key words mathnaticsexpectation characteristicfunction 收稿日期: 2000 31