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STAT 20: Introduction to Probability and Statistics

- Concept Questions
- Problem Set 7.1
- Lab 7.2

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Which one of these is not an example of overfitting (either in real life or in statistics)?

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If I decrease the RSS (e.g. by fitting a more accurate model) does the \(R^2\) value necessarily increase?

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Ovefit models tend to…

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Suppose I overfit my model to the training data. In which scenario would I expect the test set performance to be significantly worse?

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