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Train and test sets

Theory

The truth about train and test sets

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Select the statement that refers to the train set and the one that refers to the test set.

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Train setTest set
A set to evaluate the final model
A set that is used on the model fitting step
A set that is often smaller than 30% of the whole dataset.
A set that a model "sees" when it "learns" the coefficients.
A set that is quite possible makes up 80% of the entire dataset.
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