1. If your goal is to achieve less-biased prediction values, would you rather use leave-one-out cross validation, or k-fold cross validation? Explain your answer based on Bias-Variance tradeoff between leave-one-out cross validation and k-fold cross validation.
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Bias refers to the error that is introduced by approximating a real-world problem with a simplified model. Variance refers to the error that is introduced by the model's sensitivity to small fluctuations in the training data. Leave-one-out cross validation Show more…
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What is the purpose of a cross-validation dataset? To calculate the generalization error of the model on unseen data. To train a model on. To compare the accuracy of different versions of the same model ("hyperparameter tuning"). To test the assumptions of the linear model.
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