This set of R Programming Language Multiple Choice Questions & Answers (MCQs) focuses on “Packages – 3”.
1. ______ Uses Grieg-Smith method on 2 dimensional spatial data.
a) G.S.
b) g.data
c) G1DBN
d) G2db
View Answer
Explanation: The function returns a GriegSmith object which is a matrix with block sizes, sum of squares for each block size as well as mean sums of squares. G1DBN is a package performing Dynamic Bayesian Network Inference.
2. ______ finds K best paths in a given graph.
a) kBestShortestPaths
b) kcirt
c) ktrees
d) kmap
View Answer
Explanation: This package provides some routines to conduct the K-adaptive partitioning (kaps) and recursive partitioning (lrtree) for survival data.
3. ________ is a package for parsing, applying, and manipulating data cleaning rules
a) edr
b) editrules
c) edrGraphicalTools
d) edrtools
View Answer
Explanation: editrules is a package for parsing, applying, and manipulating data cleaning rules. edrGraphicalTools provides tools for dimension reduction methods.
4. ________ performs class prediction based on microarray data and clinical parameters
a) M3
b) M2
c) MAclinical
d) M5
View Answer
Explanation: M3 is used for reading M3 files.
5. Which of the following package provide namespace management functions not yet present in base R?
a) stringr
b) namespace
c) nbpMatching
d) messagewarning
View Answer
Explanation: The package namespace is one of the most confusing parts of building a package. nbpMatching contains functions for non-bipartite optimal matching.
6. Which of the following is used to analyze paleontological time-series?
a) accelerometry
b) parfossil
c) paleoTS
d) nbpMatching
View Answer
Explanation: This package contains parfossil parallelized functions for palaeoecological and palaeogeographical analysis.
7. __________ is used for the analysis of air pollution data.
a) air
b) openair
c) opena
d) openara
View Answer
Explanation: Data are typically hourly time series and both monitoring data and dispersion model output can be analysed.
8. Which of the following package contains functions for reading and displaying satellite data for oceanographic applications with R?
a) saves
b) satin
c) saws
d) termstrc
View Answer
Explanation: Saves is used for faster loading of variables.
9. ______ is used for Visualisation, verification and calibration of ternary probabilistic forecasts.
a) toss
b) termstrc
c) ternvis
d) satin
View Answer
Explanation: TESS is used for faster simulation of reconstructed phylogenetic trees under time-dependent birth-death processes.
10. _________ uniforms and customizes plots of packages ggplot2, graphics and lattice.
a) uniCox
b) uniPlot
c) unknownR
d) unigraph
View Answer
Explanation: uniPlot() allows to change parameters of the packages graphics, lattice and ggplot2 and to make these changes persistent over one R session.
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