Interview questions

R-programming interview questions

150 questions. Tap “Show answer” to check yourself.

  1. How do you check if "m" is a matrix data object in R?

  2. What is JIT in R?

  3. What is regular expression syntax?

  4. Vector v is c(1,2,3,4) and list x is list(5:8), what is the output of v*x[[1]]?

  5. How many types of C/C++ preliminaries are present in R?

  6. How can you save your data in R?

  7. I have a string "contact@dataflair.com". Which string function can be used to split the string into two different strings "contact@dataflair" and "com"?

  8. Explain different types of objects present in R?

  9. How to import data into R?

  10. How to compile and run code in R?

  11. What are applications of Predictive analysis in R?

  12. How do you get the standard deviation for a vector x?

  14. What is iPlots?

  15. Explain in brief preliminaries of C/C++?

  16. Give the syntax for creating scatterplot matrices?

  17. How to use R from python?

  18. Why is R Good for business?

  19. What is the use of sample and subset functions in R programming language?

  20. Who and When R discovered?

  21. What is TCP/IP in R?

  22. Is R is a slow language?

  23. Enlist the addition function used in R language?

  24. What is a variable assignment?

  25. What is control structure in R?

  27. What is a factor variable, and why would you use one?

  28. How R Commands are Written?

  29. What is debugging in R?

  30. How many data structures R has?

  31. Which function is used to create a boxplot graph in R?

  32. How will you list all the datasets available in all R packages?

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