摘要
讨论了七种标准差估什方法对 Shewhart(?)控制图的影响,通过对运行长度的分布角度对这七种参数估计做了比较研究,模拟结果显示三种中位数估计方法较其余四种有较好的稳健性。
Seven approaches to estimate the standard deviation are studied with unknown parameters in Shewhart X control charts. And the run length distributions are calculated through simulation. The differences among them are shown by comparing the box plots. The conclusion is drawn that the three median estimators are more robust than others.
出处
《南开大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第2期37-45,共9页
Acta Scientiarum Naturalium Universitatis Nankaiensis
基金
Supported by the Natural Science Foundation of Tianjin(033603111)
the Fund of Shanghai University of Finance and Economics(211-6-46)
