R Language Quiz

Best R Language Test 3

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This quiz “R Language Test” 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 quiz about R Language Test will help you to improve your computational understanding. Let us start with R Language Test Quiz.

Online MCQs about R Programming Language with Answers

1. The ________ function takes a vector or other objects and splits it into groups determined by a factor or list of factors.

 
 
 
 

2. _______ applies a function over the margins of an array

 
 
 
 

3. ______ function is same as lapply( )

 
 
 
 

4. What would be the output of the following code?

> x <- 1:4
> y <- 6:9
> z <- x + y
> z

 
 
 
 

5. _______ loop over a list and evaluate a function on each element

 
 
 
 

6. R comes with a ________ to help you optimize your code and improve its performance.

 
 
 
 

7. A matrix is _______ dimensional rectangular data set.

 
 
 
 

8. The lapply( ) function takes _______ arguments

 
 
 
 
 

9. ____ ____is used to apply a function over subsets of a vector

 
 
 
 

10. An analyst is checking the value of the variable x using a logical operator, so they run the following code:

x > 35 & x < 65

Which values of x would return TRUE when the analyst runs the code? Select all that apply.

 
 
 
 

11. When working in R, for which part of the data analysis process do analysts use the tidyr package?

 
 
 
 

12. Which of the following method make a vector of repeated values?

 
 
 
 

13. Which of the following is a base package for the R language?

 
 
 
 

14. What would be the output of the following code?
> x <- 1:4
> x > 2

 
 
 
 

15. The debug( ) flags a function for ______ mode in R mode.

 
 
 
 

16. Which of the following is used for Statistical analysis in R language?

 
 
 
 

17. What would be the value of the following expression?

> log(-1)

 
 
 
 

18. Why would a data analyst want to use the CRAN network when working with RStudio?

 
 
 
 

19. R functionality is divided into a number of

 
 
 
 

20. Which of the following is an example of a vectorized operation for subtraction operation

> x<- 1:4
> y<- 6:9

 
 
 
 

The R language Test covers some looping functions such asapply(), lapply(), mapply(), sapply(), and tapply(). Results from the execution of r codes are also asked.

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Online R Language Test

  • Which of the following is a base package for the R language?
  • R comes with a to help you optimize your code and improve its performance.
  • The debug( ) flags a function for mode in R mode.
  • A matrix is _________ a dimensional rectangular data set.
  • The function takes a vector or other objects and splits it into groups determined by a factor or list of factors.
  • The lapply( ) function takes arguments
  • ________is used to apply a function over subsets of a vector
  • ________ applies a function over the margins of an array
  • _________ function is the same as lapply( ) __________ loop over a list and evaluate a function on each element
  • Which of the following methods makes a vector of repeated values?
  • Which of the following is used for Statistical analysis in R language?
  • R functionality is divided into a number of
  • Which of the following is an example of a vectorized operation for subtraction operation > x<- 1:4 > y<- 6:9 What would be the output of the following code? > x <- 1:4 > y <- 6:9 > z <- x + y > z
  • What would be the output of the following code? > x <- 1:4 > x > 2
  • What would be the value of the following expression? > log(-1)
  • “An analyst is checking the value of the variable x using a logical operator, so they run the following code:x > 35 & x < 65
    Which values of x would return TRUE when the analyst runs the code? Select all that apply.”
  • When working in R, for which part of the data analysis process do analysts use the tidyr package?
  • Why would a data analyst want to use the CRAN network when working with RStudio?

R Programming Language

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MCQs R Programming Language 2

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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.

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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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Best R Language MCQs 1

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The post is about “MCQs R Language” which will help you to check your ability to execute some basic operations on objects in the R language and will help in understanding some basic concepts. This quiz may also improve your computational understanding, and it will also help you to learn and practice R language MCQs.

Please go to Best R Language MCQs 1 to view the test

R Language MCQs with Answers

R FAQS Logo: R Language MCQs
  • R is an interpreted language.  It can be accessed through ———–?
  • Who developed R?
  • Many quantitative analysts use R as their ———– tool.
  • R is an ———– programming language?
  • R was named partly after the first names of ———– R authors.
  • Packages are useful in collecting sets into a ———– unit
  • How many types of R objects are present in the R data type?
  • Which of the following is a primary tool for debugging?
  • Which function is used to create the vector with more than one element?
  • In R Language every operation has a ———– call.
  • The ———– in R is a vector.
  • Vectors come in two parts ———– and ———–.
  • ———– and ———– are types of matrices functions?
  • Which of the following commands will find the maximum value in the vector x, excluding the missing values
  • ———– initiates an infinite loop right from the start.
  • ———– command is used to skip an iteration of a loop.
  • In 1991, R was created by Ross Ihaka and Robert Gentleman in the Department of Statistics at the University of
  • R is technically much closer to the Scheme language than it is to the original ———– language.
  • R Language functionality is divided into a number of ———–.
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