Statistical Computing and Graphics in R

# R Language Test 2

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 may also improve your computational understanding.

1. ______ function is same as lapply( )

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

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

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

5. The lapply( ) function takes _______ arguments

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

> log(-1)

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

8. R functionality is divided into a number of

9. 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.

10. A matrix is _______ dimensional rectangular data set.

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

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

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

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

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

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

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

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

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

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

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

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.

### Online R Language Test

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

Computer MCQs Test Online

R Language Test 2
Scroll to top