Hello
 
Can anyone tell me what I am doing wrong below? My Y and y_hat are the same.
 
 

A<-scale(stackloss)
n1<- dim(A)[1];n2<-dim(A)[2]
X<-svd(A)
Y<- matrix(A[,"stack.loss"],nrow=n1)
Y
y_hat <-matrix((X$u%*% t(X$u))%*%Y,nrow=n1,byrow=T)
y_hat

	[[alternative HTML version deleted]]


