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Welcome to the Profiling,Simulation and Data Analysis MCQs Page

Dive deep into the fascinating world of Profiling,Simulation and Data Analysis with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Profiling,Simulation and Data Analysis, a crucial aspect of R Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Profiling,Simulation and Data Analysis, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within R Programming.

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Check out the MCQs below to embark on an enriching journey through Profiling,Simulation and Data Analysis. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of R Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Profiling,Simulation and Data Analysis. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Profiling,Simulation and Data Analysis MCQs | Page 10 of 11

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Q91.
Which function opens the screen graphics device for the Mac?

a.

bitmap()

b.

quartz()

c.

pdf()

d.

png()

Discuss
Answer: (b).quartz()
Q92.
What does the ‘pch’ option to par() control?

a.

the size of the plotting symbol in a scatterplot

b.

the line width in the base graphics system

c.

the orientation of the axis labels on the plot

d.

the plotting symbol/character in the base graphics system

Discuss
Answer: (d).the plotting symbol/character in the base graphics system
Q93.
If I want to save a plot to a PDF file, which of the following is a correct way of doing that?

a.

Construct the plot on the screen device and then copy it to a PDF file with dev.copy2pdf()

b.

Construct the plot on the PNG device with png(), then copy it to a PDF with dev.copy2pdf()

c.

Open the PostScript device with postscript(), construct the plot, then close the device with dev.off()

d.

Open the screen device with quartz(), construct the plot, and then close the device with dev.off()

Discuss
Answer: (a).Construct the plot on the screen device and then copy it to a PDF file with dev.copy2pdf()
Q94.
__________ produces box-and-whisker plots.

a.

xyplot

b.

dotplot

c.

barchart

d.

bwplot

Discuss
Answer: (d).bwplot
Q95.
__________ produces bivariate scatterplots or time-series plots.

a.

xyplot

b.

dotplot

c.

barchart

d.

bwplot

Discuss
Answer: (a).xyplot
Q96.
Annotation of plots in any plotting system involves adding points, lines, or text to the plot, in addition to customizing axis labels or adding titles. Different plotting systems have different sets of functions for annotating plots in this way. Which of the following functions can be used to annotate the panels in a multi-panel lattice plot?

a.

points()

b.

panel.abline()

c.

lines()

d.

axis()

Discuss
Answer: (b).panel.abline()
Q97.
____________ produces one-dimensional scatterplots.

a.

xyplot

b.

stripplot

c.

barchart

d.

bwplot

Discuss
Answer: (b).stripplot
Q98.
Which of the following functions can be used to finely control the appearance of all lattice plots ?

a.

par()

b.

print.trellis()

c.

splom()

d.

trellis.par.set()

Discuss
Answer: (d).trellis.par.set()
Q99.
What is ggplot2 an implementation of?

a.

the Grammar of Graphics developed by Leland Wilkinson

b.

3D visualization system

c.

the S language originally developed by Bell Labs

d.

the base plotting system in R

Discuss
Answer: (a).the Grammar of Graphics developed by Leland Wilkinson
Q100.
For barchart and _________ non-trivial methods exist for tables and arrays, documented at barchart.table.

a.

scatterplot

b.

dotplot

c.

xyplot

d.

scatterplot and xyplot

Discuss
Answer: (b).dotplot
Page 10 of 11

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