12.6 - Overfitting and Underfitting
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Practice Questions
Test your understanding with targeted questions
What happens when a model overfits?
💡 Hint: Think about how well a student does on practice tests versus the actual exam.
What is the main issue with underfitting?
💡 Hint: Consider how a student might miss key concepts in their studies.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is overfitting?
💡 Hint: Consider how well the model can predict on new data versus training data.
True or False: Underfitting refers to a model that has high variance.
💡 Hint: Remember the definitions of variance and bias.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Consider a dataset where the relationship between variables is quadratic, but you use a linear regression model. What issues arise, and how can this be resolved?
💡 Hint: What additional terms could capture the relationship between your variables?
You have data that is very noisy, and a model is trained to fit every point exactly. Explain the likely outcomes and the adjustments you could make to improve generalization.
💡 Hint: What techniques can you think of to penalize complexity?
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