摘要
从理论上证明了一元线性回归中选取不同的变量时,所得两条回归直线的关系。讨论了两直线夹角的正切。
The paper theoretically proves the relationship of two straight regression lines gained when diffeernt variables are selected in monadic linear regresson and further discusses the tangent of included angle of straight lines.
出处
《张家口职业技术学院学报》
2002年第3期42-44,共3页
Journal of Zhangjiakou Vocational and Technical College
关键词
变量
线性回归
相关系数
回归直线
variable
linear regression
coefficient of correlation
regression line
