Practice Activities (4.2) - Supervised Learning - Regression & Regularization (Weeks 4)
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Practice Questions

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Question 1 Easy

What is the purpose of scaling features before applying regularization?

💡 Hint: Think about how features with larger numerical ranges can dominate the model's training.

Question 2 Easy

Name one regularization technique used to reduce overfitting.

💡 Hint: Recall the techniques we discussed in the chapter.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does regularization aim to achieve in machine learning?

Increase overfitting
Improve model accuracy on unseen data
Ignore noise in data

💡 Hint: Remember the purpose of regularization techniques.

Question 2

Is it true that Lasso regression can perform feature selection?

True
False

💡 Hint: Consider how Lasso's penalty works.

1 more question available

Challenge Problems

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Challenge 1 Hard

Suppose you have two models: one with high variance resulting from overfitting, and another with high bias from underfitting. Describe how you would use regularization techniques to improve them.

💡 Hint: Think about both reducing complexity and increasing feature relevance.

Challenge 2 Hard

You implement Lasso regression and some coefficients become zero. Explain how this impacts model interpretation and future steps.

💡 Hint: Consider why feature selection might help in real-world applications.

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