Question: Why would you use the training data set to calculate a selection criterion property? a. They are always calculated from the training data set. b.

Why would you use the training data set to calculate a selection criterion property? a. They are always calculated from the training data set. b. You don't have enough observations to split into training and validation data sets. c. It makes more sense to use the data that was used to build the model. d. You never use the training data set to calculate a selection criterion property

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