1
Which function in R is used to create a basic plot?
Correct Answerplot()
☑ MCQ PRACTICE
R Programming Unit 5
Practice objective questions for quick revision and examination preparation. Try answering each question before revealing the answer.
R Programming — Unit 5
Graphics, Plotting, Debugging and Error Handling
2
To add a title to a plot, which function is used?
Correct Answertitle()
3
Which function is used to create a histogram in R?
Correct Answerhist()
4
In R, which function is used to create a boxplot?
Correct Answerboxplot()
5
The function to create a bar plot is:
Correct Answerbarplot()
6
What argument is used to change color in a plot?
Correct Answercol
7
To save a plot as a PDF, which function is used?
Correct Answerpdf()
8
Which function is used to save a plot as a JPEG file?
Correct Answerjpeg()
9
To create a 3D plot in R, we commonly use the package:
Correct Answerplot3D
10
Which function from plot3D creates 3D scatter plots?
Correct Answerpoints3D()
11
What is the primary goal of debugging?
Correct AnswerFix errors
12
Which type of error occurs due to mistakes in writing code?
Correct AnswerSyntax error
13
A runtime error occurs when:
Correct AnswerCode violates rules during execution
14
Which R function is used to debug a function?
Correct Answerdebug()
15
Which function is used to remove debugging from a function?
Correct Answerundebug()
16
What function is used to trace the execution of an R function?
Correct Answertrace()
17
Which function allows you to browse inside a function during an error?
Correct Answerbrowser()
18
The R function to stop execution for debugging is:
Correct Answerbrowser()
19
What is GDB mainly used for in R debugging?
Correct AnswerDebugging compiled R code
20
Syntax errors are generally caught during:
Correct AnswerCompilation
21
In which mode do you see step-by-step code execution?
Correct AnswerDebugging mode
22
Which of these is NOT a debugging function in R?
Correct Answerrender()
23
Which command runs GDB on R itself?
Correct AnswerR -d gdb
24
Moving to higher-level debugging tools helps in:
Correct AnswerMore convenient debugging
25
If an error occurs while running a simulation, what is most important to check?
Correct AnswerConsistency of simulation steps
26
To find hidden errors in simulation code, you should:
Correct AnswerEnsure consistency and debug
27
Which of the following can help to detect runtime errors?
Correct Answerbrowser()
28
Which type of error is easiest to catch before running the code?
Correct AnswerSyntax error
29
Which is the default error handler function in R?
Correct Answertraceback()
30
To view the sequence of function calls that led to an error, use:
Correct Answertraceback()