摘要
区间估计是概率统计中重要的知识点,通过构造枢轴量,建立概率函数等式,确定方差已知单个正态总体均值区间估计表达式及方差未知单个正态总体均值区间估计表达式。通过Excel编程处理,将理论表达式转换为程序语言,对单个正态总体均值区间估计表达式进行转换,建立均值区间估计程序表达式。将该表达式应用于轮胎使用寿命实践中,简化了理论推导与计算流程,缩短了计算实践,提高了计算精度,对实际生产有很强的指导作用。
Interval estimation plays a key role in probability statistics.By constructing pivot quantity and establishing probability function equation,the mean value estimation expression intervals of single normal population with different variances are established.Through excel programming,the theoretical expression is converted into program language,and the programming formula of mean value interval estimation is established.The application of this expression in the tire service life practice simplifies the theoretical derivation and calculation process,shortens the calculation practice,improves the calculation accuracy,and has a strong guiding effect on actual production.
作者
刘浩瀚
LIU Hao-han(Department of Basic Education,Sichuan College of Architectural Technology,Deyang 618000,China)
出处
《经济研究导刊》
2019年第21期182-183,共2页
Economic Research Guide
基金
教育部职业院校教育类专业教学指导委员会项目(No.2018GGJCKT200)
四川建筑职业技术学院院级教改课题(No.10)
