1. Which function in R is used to create a basic plot?

A . graph()

B . createPlot()

C . plot()

D . draw()

Answer

2. To add a title to a plot, which function is used?

A . addTitle()

B . text()

C . title()

D . heading()

Answer

3. Which function is used to create a histogram in R?

A . hist()

B . plot()

C . chart()

D . diagram()

Answer

4. In R, which function is used to create a boxplot?

A . boxplot()

B . plotbox()

C . boxgraph()

D . plot()

Answer

5. The function to create a bar plot is:

A . bar()

B . barplot()

C . plotbar()

D . drawbar()

Answer

6. What argument is used to change color in a plot?

A . bg

B . col

C . color

D . clr

Answer

7. To save a plot as a PDF, which function is used?

A . pdf()

B . save()

C . export()

D . write()

Answer

8. Which function is used to save a plot as a JPEG file?

A . jpeg()

B . save()

C . writejpeg()

D . exportjpeg()

Answer

9. To create a 3D plot in R, we commonly use the package:

A . lattice

B . plot3D

C . ggplot2

D . dplyr

Answer

10. Which function from plot3D creates 3D scatter plots?

A . scatter3d()

B . plot3d()

C . points3D()

D . cloud()

Answer

11. What is the primary goal of debugging?

A . Make code faster

B . Fix errors

C . Save memory

D . Reduce syntax

Answer

12. Which type of error occurs due to mistakes in writing code?

A . Runtime error

B . Syntax error

C . Logical error

D . Output error

Answer

13. A runtime error occurs when:

A . Code is missing

B . Code violates rules during execution

C . Syntax is incorrect

D . File is not saved

Answer

14. Which R function is used to debug a function?

A . fix()

B . debug()

C . trace()

D . inspect()

Answer

15. Which function is used to remove debugging from a function?

A . undebug()

B . untrace()

C . clear()

D . nodebug()

Answer

16. What function is used to trace the execution of an R function?

A . debug()

B . trace()

C . inspect()

D . follow()

Answer

17. Which function allows you to browse inside a function during an error?

A . browse()

B . browser()

C . inspect()

D . open()

Answer

18. The R function to stop execution for debugging is:

A . stop()

B . halt()

C . browser()

D . debugstop()

Answer

19. What is GDB mainly used for in R debugging?

A . Visualize data

B . Graph plotting

C . Debugging compiled R code

D . Saving graphs

Answer

20. Syntax errors are generally caught during:

A . Execution

B . Compilation

C . Editing

D . Debugging

Answer

21. In which mode do you see step-by-step code execution?

A . Execution mode

B . Trace mode

C . Debugging mode

D . Browse mode

Answer

22. Which of these is NOT a debugging function in R?

A . debug()

B . undebug()

C . browser()

D . render()

Answer

23. Which command runs GDB on R itself?

A . run(R)

B . R -d gdb

C . gdb()

D . start(R)

Answer

24. Moving to higher-level debugging tools helps in:

A . Increasing errors

B . Reducing memory

C . More convenient debugging

D . Writing new code

Answer

25. If an error occurs while running a simulation, what is most important to check?

A . Graphs

B . Data types

C . Consistency of simulation steps

D . Plot labels

Answer

26. To find hidden errors in simulation code, you should:

A . Ignore warnings

B . Always recompile

C . Ensure consistency and debug

D . Save graphs

Answer

27. Which of the following can help to detect runtime errors?

A . print()

B . summary()

C . browser()

D . hist()

Answer

28. Which type of error is easiest to catch before running the code?

A . Syntax error

B . Runtime error

C . Logical error

D . Data error

Answer

29. Which is the default error handler function in R?

A . error()

B . stop()

C . traceback()

D . handler()

Answer

30. To view the sequence of function calls that led to an error, use:

A . viewerror()

B . traceback()

C . errorpath()

D . errortrace()

Answer

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Relevant Materials :

☞ R - Programming MCQs - Unit-1 - [ R-Programming ]

☞ R - Programming MCQs - Unit-2 - [ R-Programming ]

☞ R - Programming MCQs - Unit-3 - [ R-Programming ]

☞ R - Programming MCQs - Unit-4 - [ R-Programming ]

☞ R - Programming MCQs - Unit-5 - [ R-Programming ]

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