Freshers (0–2 years)

Decision Trees Interview Questions for Freshers

Preparing for your first Decision Trees interviews? This set is curated for freshers and early-career developers (0–2 years): the 23 questions that come up most for entry-level roles, each with a clear answer, example code and follow-ups.

23Questions11Beginner12Intermediate

23 Decision Trees questions

  1. 1What is feature importance in Decision Trees?Intermediate
  2. 2What is min_samples_leaf in Decision Trees?Intermediate
  3. 3What is min_samples_split in Decision Trees?Intermediate
  4. 4What is max depth in Decision Trees and why is it important?Intermediate
  5. 5What is the difference between CART, ID3, and C4.5 algorithms?Intermediate
  6. 6What is a binary split in Decision Trees?Intermediate
  7. 7How does a Decision Tree handle missing values?Intermediate
  8. 8What is the difference between classification and regression trees?Intermediate
  9. 9What are hyperparameters in Decision Trees?Intermediate
  10. 10What is overfitting in Decision Trees?Beginner
  11. 11What is pruning in Decision Trees?Beginner
  12. 12What is information gain in Decision Trees?Beginner
  13. 13What is Gini Impurity in Decision Trees?Beginner
  14. 14What is entropy in Decision Trees?Beginner
  15. 15What are splitting criteria in Decision Trees?Beginner
  16. 16What is a Decision Tree in Machine Learning?Beginner
  17. 17What is a Decision Tree?Beginner
  18. 18What is “splitting” in a Decision Tree?Beginner
  19. 19What is overfitting in Decision Trees and why does it happen?Intermediate
  20. 20How does a Decision Tree make predictions?Intermediate
  21. 21Decision Trees Advanced Interview Question 10Beginner
  22. 22Decision Trees Advanced Interview Question 8Intermediate
  23. 23Decision Trees Advanced Interview Question 7Beginner

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Frequently asked questions

Which Decision Trees questions do freshers (0–2 years) get asked?

This page collects 23 Decision Trees interview questions aligned with freshers (0–2 years), ranging across the difficulty levels that match that experience band.

How do I prepare for a Decision Trees interview with my experience level?

Work through these questions in order, make sure you can explain each answer out loud, and pay attention to the real-world examples and follow-ups — interviewers at this level care as much about reasoning as the final answer.

Do the answers include code and examples?

Yes — answers include explanations, code examples where relevant, common mistakes to avoid and follow-up questions so you are ready for the full interview conversation.