R Language Quiz 15: Important MCQs

The post is about R Language Quiz with Answers. The quiz covers, MCQs about Data Structure, Data Analysis in R, and Some Basics of R Programming Languages. Let us start with the R Programming MCQs Quiz.

Multiple Choice Questions about R Language with Answers

1. what is the output of the following

y <- c(TRUE, 2)

 
 
 
 

2. R files have an extension ———-.

 
 
 
 

3. What is the function to give names to columns for a matrix?

 
 
 
 

4. Dataframes can be converted into a matrix by calling the following function data ———-

 
 
 
 

5. what is the class of object $y$

y <- c(2, "t")

 
 
 
 

6. Which of the following is an alternative to ‘?’ symbol ———.

 
 
 
 

7. Which of the following is not an R object?

 
 
 
 

8. Which of them is not a basic datatype in R?

 
 
 
 

9. Which of the following can be used to display the names of (most of) the objects that are currently stored within R?

 
 
 
 

10. How one can create an integer say 5?

 
 
 
 

11. What is the meaning of “<-” in R

 
 
 
 

12. How many atomic vector types does R have

 
 
 
 

13. What function is used to test objects if they are NaN?

 
 
 
 

14. Matrices can be created by row-binding using the function

 
 
 
 

15. A ——– is a variable that holds one value at a time

 
 
 
 

16. What is the output of the following

d <- diag(5, nrow = 2, ncol = 2); d

 
 
 
 

17. R language has a superficial similarity with ———.

 
 
 
 

18. The dimension attribute is itself an integer vector having length ——-.

 
 
 
 

19. What is NaN called?

 
 
 
 

20. What is the class of the object $y$

y <- c(FALSE, 2)

 
 
 
 

R Language Quiz with Answers

  • What is NaN called?
  • what is the output of the following y <- c(TRUE, 2)
  • what is the class of object $y$ y <- c(2, “t”)
  • What is the class of the object $y$ y <- c(FALSE, 2)
  • Which of them is not a basic datatype in R?
  • How one can create an integer say 5?
  • The dimension attribute is itself an integer vector having length ——-.
  • Matrices can be created by row-binding using the function
  • What function is used to test objects if they are NaN?
  • What is the function to give names to columns for a matrix?
  • How many atomic vector types does R have
  • What is the output of the following d <- diag(5, nrow = 2, ncol = 2); d
  • Which of the following can be used to display the names of (most of) the objects that are currently stored within R?
  • A ——– is a variable that holds one value at a time
  • What is the meaning of “<-” in R
  • Which of the following is not an R object?
  • Dataframes can be converted into a matrix by calling the following function data ———-
  • R files have an extension ———-.
  • R language has a superficial similarity with ———.
  • Which of the following is an alternative to ‘?’ symbol ———.
R Language Quiz with Answers

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