Nothing
RESID <-
function(x,b)
{
x <- as.matrix(x)
n <- nrow(x)
p <- length(b)-1
xmat <- matrix(1,nrow=n-p,ncol=p+1)
index <- p:(n-1)
for(i in 1:p)
{xmat[,i] <- x[index,1]
index <- index-1
}
y <- x[(p+1):n,1]
e <- y - xmat %*% b
return(e-mean(e))
}
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