MCQs R Programming Language 1

This quiz “MCQs R Programming Language” will help you to check your ability to execute some basic operations on objects in the R language, and it will also help you to understand some basic concepts. This MCQs R Programming Language Quiz will also improve computational understanding. Let us start with the test “MCQs R Programming Language” with Answers.

Online MCQs about R Programming Language.

1. Which of the following examples can you use in R for date/time data?

 
 
 
 

2. If I execute the expression x <- 4 in R language, what is the class of the object “x” as determined by the “class()” function?

 
 
 
 

3. What function is used to test the missing observation in a data frame

 
 
 
 

4. Suppose I have a vector x <- c(3, 5, 1, 10, 12, 6) and I want to set all elements of this vector that are less than 6 to be equal to zero. What R code achieves this?

 
 
 
 

5. If I have two vectors x <- c(1,3, 5) and y <- c(3, 2, 10), what is produced by the expression rbind(x, y)?

 
 
 
 

6. Suppose I have a list defined as x <- list(2, “a”, “b”, TRUE). What does x[[2]] give me?

 
 
 
 

7. Which of the following examples is the proper syntax for a function in R?

 
 
 
 

8. A data analyst inputs the following calculation in their R programming:
$$basket_1 * 20 + basket_2 * 15 $$
Which arithmetic operators are the analyst using?

 
 
 
 

9. What is the benefit of using the R programming language for data analysis?

 
 
 
 

10. Suppose I have a vector x <- 1:4 and y <- 2:3. What is produced by the expression x + y?

 
 
 
 

11. A key property of vectors in R language is that

 
 
 
 

12. Which of the following statements about RStudio’s integrated development environment are correct?

 
 
 
 

13. What is the class of the object defined by the expression x <- c(4, “a”, TRUE)?

 
 
 
 

14. A data analyst writes the code summary(penguins) to display a summary of the penguins dataset. Where in RStudio can the analyst execute the code?

 
 
 
 

15. _________ is a function in R to get the number of observations in a data frame

 
 
 
 

16. Which of the following statements about RStudio’s integrated development environment are correct?

 
 
 
 

17. The R language is a dialect of which of the following programming languages?

 
 
 
 
 

18. The definition of free software consists of four freedoms (freedoms 0 through 3). Which of the following is NOT one of the freedoms that are part of the definition?

 
 
 
 

19. What should you use to assign a value to a variable in R?

 
 
 
 

20. In R language the following are all atomic data types EXCEPT

 
 
 
 


rfaqs.com MCQs R Programming Language

MCQs R Programming Language 1

  • The R language is a dialect of which of the following programming languages?
  • The definition of free software consists of four freedoms (freedoms 0 through 3). Which of the following is NOT one of the freedoms that are part of the definition?
  • In R language the following are all atomic data types EXCEPT
  • If I execute the expression x <- 4 in R language, what is the class of the object “x” as determined by the “class()” function?
  • What is the class of the object defined by the expression x <- c(4, “a”, TRUE)?
  • If I have two vectors x <- c(1,3, 5) and y <- c(3, 2, 10), what is produced by the expression rbind(x, y)?
  • A key property of vectors in R language is that
  • Suppose I have a list defined as x <- list(2, “a”, “b”, TRUE). What does x[[2]] give me?
  • Suppose I have a vector x <- c(3, 5, 1, 10, 12, 6) and I want to set all elements of this vector that are less than 6 to be equal to zero. What R code achieves this?
  • ____________ is a function in R to get the number of observations in a data frame
  • What function is used to test the missing observation in a data frame
  • Which of the following statements about RStudio’s integrated development environment are correct?
  • Suppose I have a vector x <- 1:4 and y <- 2:3. What is produced by the expression x + y?
  • Which of the following statements about RStudio’s integrated development environment are correct?
  • A data analyst writes the code summary(penguins) to display a summary of the penguins dataset. Where in RStudio can the analyst execute the code?
  • What should you use to assign a value to a variable in R?
  • Which of the following examples is the proper syntax for a function in R?
  • What is the benefit of using the R programming language for data analysis?
  • Which of the following examples can you use in R for date/time data?
  • A data analyst inputs the following calculation in their R programming: $$basket_1 * 20 + basket_2 * 15 $$ Which arithmetic operators are the analyst using?
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