Freshers (0–2 years)

R Interview Questions for Freshers

Preparing for your first R interviews? This set is curated for freshers and early-career developers (0–2 years): the 27 questions that come up most for entry-level roles, each with a clear answer, example code and follow-ups.

27Questions14Beginner13Intermediate

27 R questions

  1. 1How do you evaluate models in R?Intermediate
  2. 2How are dates handled in R?Intermediate
  3. 3How does string manipulation work in R?Intermediate
  4. 4How does data reshaping work in R?Intermediate
  5. 5How do you debug R code?Intermediate
  6. 6How does linear regression work in R?Intermediate
  7. 7What are factors in R?Intermediate
  8. 8How do you merge datasets in R?Intermediate
  9. 9What is tapply used for?Intermediate
  10. 10What is the apply family in R?Intermediate
  11. 11What is ggplot2 used for?Beginner
  12. 12What is dplyr used for in R?Beginner
  13. 13How do you read CSV files in R?Beginner
  14. 14How do loops work in R?Beginner
  15. 15How do functions work in R?Beginner
  16. 16How are NA values handled in R?Beginner
  17. 17How does indexing work in R?Beginner
  18. 18What is a data frame in R?Beginner
  19. 19What are vectors in R?Beginner
  20. 20What is R and why is it used in data analysis?Beginner
  21. 21R Interview Question 4 (Free)Beginner
  22. 22R Interview Question 2 (Free)Intermediate
  23. 23R Interview Question 1 (Free)Beginner
  24. 24R Interview Question 5 (Free)Intermediate
  25. 25R Advanced Interview Question 10Beginner
  26. 26R Advanced Interview Question 8Intermediate
  27. 27R Advanced Interview Question 7Beginner

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Frequently asked questions

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

This page collects 27 R interview questions aligned with freshers (0–2 years), ranging across the difficulty levels that match that experience band.

How do I prepare for a R 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.