摘要
概率论与数理统计是进行数据分析的重要工具。概率论中的数学期望和方差的概念在经济决策中发挥着重要的作用。本文从实例"小李的选择"出发,根据数学期望以及方差的概念分析了期望和方差在决策中的应用步骤和应用方法。实例结果表明,期望和方差可为经济决策提供一个切实可行的方法。
Probability theory and mathematical statistics is an important tool for data analysis.The concept of mathematical expectation and variance in probability theory plays an important role in economic decision making.In this paper,the application methods and steps are analyzed based on the concept of expectation and variance in the case of"Li's choice".The results of the example show that the expectation and the variance can provide a feasible method for economic decision.
作者
孙晓玲
SUN Xiaoling(School of Mathematics and Statistics, Hefei Normal University, Hefei 230601, China)
出处
《合肥师范学院学报》
2017年第6期7-9,24,共4页
Journal of Hefei Normal University
基金
安徽省级质量工程项目(2016gkk027)
安徽省高等学校自然科学研究重点项目(KJ2016A580)
关键词
数学期望
方差
微课
案例教学
mathematical expectation
variance
micro-lectures
case teaching
