Hello I am trying to use predict.lm, but I am having trouble getting out of
sample predictions. I am getting the same output if I use the following
three commands:
predict(ModeloLineal,predictors[721:768,])
predict(ModeloLineal,predictors[1:768,])
predict(ModeloLineal)
where ModeloLineal is the output from ModeloLineal<-lm(dataTS[,6] ~
predictors[1:720,]), so the first 720 observations of predictors i would
like to use them to build my model and the other 48 I would like to use them
to have an out of sample forecast, Do you know how can I do this?
Thank you
Felipe Parra
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