rtist [quote]引用第19楼fu_neng于2006-11-21 20:53发表的“”: 用cor(y,y') 求到的与模型返回的R^2的平方根的值不一样，想看cor（）用到的公式究竟和决定系数有什么不同[/quote] you can try it. but don't waste to much time on this, it won't solve your problem.
