You fit a quadratic model to data that clearly follows a quartic (4th-degree polynomial) trend. The model performs poorly on both training and test sets.

What issue is the model most likely suffering from?

Question

You fit a quadratic model to data that clearly follows a quartic (4th-degree polynomial) trend. The model performs poorly on both training and test sets.

What issue is the model most likely suffering from?

Answer

Underfitting: The model is too simple to capture the true relationship.

Answer

High variance: The model fits training data well but generalizes poorly.

Answer

Overfitting: The model is too complex and captures noise in the data.

Answer

Data leakage: The model has seen information from the test set.

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You fit a quadratic model to data that clearly follows a quartic (4th-degree pol...

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