MCQs R Vectors Data Structure 4

This quiz “MCQs R Vectors covers” the topics related to creating different types of vectors in R, vector operations, Functions for vectors, naming, and concatenating vectors in R. Let us start with the Quiz on MCQS R Vectors.

Online MCQs R Language Test

1. What are ggplot2, tidyr, dplyr, and forcats all a part of?

 
 
 
 

2. The following command can be used to print an object “x” in R?

 
 
 
 

3. Identify the wrong statement:

 
 
 
 

4. A data analyst finds the code mdy(10211020) in an R script. What is the year of the date that is created?

 
 
 
 

5. What is the output of the following R code?
x <- c("a", "b")
as.numeric(x)

 
 
 
 

6. A data analyst wants to store a sequence of data elements that all have the same data type in a single variable. What R concept allows them to do this?

 
 
 
 

7. What is the output of the following R code?
y <- 0:5
vector(y)
y[3]

 
 
 
 

8. Which of the describes R Language best

 
 
 
 

9. A data analyst inputs the following code in RStudio:
sales_1 <- 100 * sales_2
Which of the following types of operators does the analyst use in the code?

 
 
 
 

10. How can one define ‘undefined value’ in R Language?

 
 
 
 

11. Which tidyverse package is used for data visualization?

 
 
 
 

12. ________ operator is used to create integer sequences.

 
 
 
 

13. Which tidyverse package contains a set of functions, such as select(), that help with data manipulation?

 
 
 
 

14. What is the output of the following R code?

r <- 0:10
r[2]

 
 
 
 

15. How one can define ‘infinity’ in R Language?

 
 
 
 

16. Which function can you use to create a different plot for each type of cut of diamond?

 
 
 
 

17. If a command is incomplete at the end of a line, R will give a different prompt, by default it is _____

 
 
 
 

18. A data analyst wants to combine values using mathematical operations. What type of operator would they use to do this?

 
 
 
 

19. An analyst is organizing a dataset in RStudio using the following code:
arrange(filter(Storage_1, inventory >= 40), count)
Which of the following examples is a nested function in the code?

 
 
 
 

20. Which of the following statements about vectors in R is correct?

 
 
 
 


In R Langauge, a vector data type is a fundamental data structure that represents a sequence of elements having the same data type. R Vectors can be of various types, including numeric, character, logical, and more.

MCQs R Vectorr

MCQs R Vectors

  • The following command can be used to print an object “x” in R.
  • What is the output of the following R code? r <- 0:10 r[2]
  • ________ operator is used to create integer sequences.
  • What is the output of the following R code? y <- 0:5 vector(y) y[3]
  • How can one define ‘infinity’ in R Language? How can one define ‘undefined value’ in R Language?
  • What is the output of the following R code? x <- c(“a”, “b”) as.numeric(x)
  • Identify the wrong statement:
  • If a command is incomplete at the end of a line, R will give a different prompt, by default it is _____
  • Which of the described R Language best
  • Which function can you use to create a different plot for each type of cut of diamond?
  • A data analyst inputs the following code in RStudio: sales_1 <- 100 * sales_2. Which of the following types of operators does the analyst use in the code?
  • What are ggplot2, tidyr, dplyr, and forcats all a part of?
  • Which tidyverse package is used for data visualization?
  • An analyst is organizing a dataset in RStudio using the following code: arrange(filter(Storage_1, inventory >= 40), count)
  • Which of the following examples is a nested function in the code?
  • Which tidyverse package contains a set of functions, such as select(), that help with data manipulation?
  • Which of the following statements about vectors in R is correct?
  • A data analyst finds the code mdy(10211020) in an R script. What is the year of the date that is created?
  • A data analyst wants to combine values using mathematical operations. What type of operator would they use to do this?
  • A data analyst wants to store a sequence of data elements with the same data type in a single variable. What R concept allows them to do this?

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