Question: For dataset with relatively few observations, which indicate overfitting?1 r squared is very close to 1 2 beta coefficients are extremely large 3 residual error

For dataset with relatively few observations, which indicate overfitting?1 r squared is very close to 1 2 beta coefficients are extremely large 3 residual error on the training set is much larger than on the test set 4 residuals are heteroscedastic

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