Residual variance from a locfit object.
As part of the locfit fitting procedure, an estimate
of the residual variance is computed; the rv function extracts
the variance from the "locfit" object.
The estimate used is the residual sum of squares
(or residual deviance, for quasi-likelihood models),
divided by the residual degrees of freedom.
For likelihood (not quasi-likelihood) models, the estimate is 1.0.
rv(fit)
fit |
|
Returns the residual variance estimate from the "locfit" object.
data(ethanol) fit <- locfit(NOx~E,data=ethanol) rv(fit)
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