what is training data and testing data called in r/caret? what is the purpose of r/caret model what is the difference between train and test data in r caret what's the purpose of lgocv in r model which is better to train and test a model or to test on a test set? how do i train my data set in r? what is train/test set r cross validation what is the purpose of testing a model in r r/caret how to train a model what is the difference between train and test sets can you use multiple sets for a caret model what is the purpose of combining train, test and cross validation methods? what is the difference between train and test sets in r or caret how to split data into test sets what is the purpose of cross validation what is the purpose of a train-test-set model can r split test data into train and test set r/caret how to test a model why do i split my model into test and train sets