摘要
本文提出了一种刻划数据对回归分析影响的度量,称为中心预测差。这种度量不仅描述了强影响点和高杠杆点及异常点之间的关系,而且揭示出了数据影响与样本容量u之间的关系,这是本文以前所见的各种关于数据影响的度量所没能揭示的关系。
in this paper, we suggeste a measure of influence which data have on regression analysis,this mea- sure is called the defference of predication in center. Not only describes it the relationship between highly influential case and outier case, high lecerage case,but it reveals that between influence which data have and sample size:n.
出处
《山西师范大学学报（自然科学版）》
1991年第1期6-11,共6页
Journal of Shanxi Normal University(Natural Science Edition)
基金
山西省自然科学基金
关键词
强影响点
中心预测差
Highly Influential case
Defference of predication in center
