R interview questions part 2
R interview questions part 2
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. A single element of a character vector is referred as ________
Correct Answer is : Character string
2. R files has an extension ______
Correct Answer is : .R
3. If the code is stored in the external file, which of the following function is used to call them to a working directory?
Correct Answer is : source()
4. Advanced programmers can write ______ code to manipulate R objects.
Correct Answer is : C
5. In ________ Insightful purchased the S language from Lucent for $2 million.
Correct Answer is : 2004
6. Functionality of R is divided into a number of __________
Correct Answer is : Functions
7. Dataframes can be converted into a matrix by calling the following function data ______
Correct Answer is : matrix()
8. What would be the output of the following code? x <- (“a”, “b”) as.logical(x)
Correct Answer is : Error
9. What is the output of the following command? a <- (“a” , “b”) mode(a)
Correct Answer is : Character
10. Which of the following is not an object of R?
Correct Answer is : strings
11. Is It possible to inspect the source code of R?
Correct Answer is : Yes
12. How to install for a package and all of the other packages on which for depends?
Correct Answer is : install.packages (“for”, depends = TRUE)
13. __________ function is used to watch for all available packages in library.
Correct Answer is : library()
14. The longer programs are called ____________
Correct Answer is : Scripts
15. Scripts will run on ___________________
Correct Answer is : Script Editors
16. Which of the following is a “Recommended” package in R?
Correct Answer is : Spatial
17. Full Form of GUI is ___________________
Correct Answer is : Graphical User Interface
18. ____________ provides a point-and-click interface to many basic statistic problems.
Correct Answer is : Commander
19. What is the output of the following code? options(digits = 16) 20/6
Correct Answer is : 3.333333333
20. In which IDE we can interact with R?
Correct Answer is : R studio
