E*E 发帖数: 52 | 1 【 以下文字转载自 Statistics 讨论区 】
发信人: EFE (EFE), 信区: Statistics
标 题: help!! about residual scale
发信站: BBS 未名空间站 (Wed Sep 17 20:01:26 2008)
when I use Splus "lmRobMM" method to do regression, it can return a output-
"scale" as for example "Residual scale estimate: 4.513 on 101 degrees of
freedom"
Can any one please tell me the definition and formula of this "Residual
scale"?
I saw something like "sqrt(deviance/df)"
what is the formula for "deviance"?
Thanks a lot! |
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