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This quiz contains multiple-choice problems on graphical devices and plotting systems, basics of reproducible research, clustering, exploratory graphs and basics of literate statistical programming.
Which of the following systems do(es) not have postscript viewer most often?
Windows
Linux
Mac
All of the mentioned
There are mainly three types of file devices. True or false?
True
False
Which of the following is a bitmap file type?
TIFF
SVG
None of the above
Which of the following functions display(s) a currently active graphics device?
dev.present
dev.cur
pre.cur
All of the above
The screen device is the most familiar place to ‘send’ a plot. True or false?
True
False
Which of the following is finally produced by hierarchical clustering?
Final estimate of cluster centroids
Tree showing how close things are to each other
Assignment of each point to clusters
All of the above
Which of the following is required by K-means clustering?
Defined distance metric
Number of clusters
Initial guess as to cluster centroids
All of the above
Which of the following combinations is incorrect?
Continuous – Euclidean distance
Continuous – correlation similarity
Binary – Manhattan distance
None of the above
Hierarchical clustering should be used primarily for exploration. True or false?
True
False
Which of the following functions is used for K-means clustering?
K-means
K-mean
Heatmap
None of the above
Which of the following clusterings requires a merging approach?
Partitional
Hierarchical
Naive Bayes
None of the above
K-means is not deterministic, and it also consists of several iterations. True or false?
True
False
Which of the following is an example of a graphics device?
SVG
JPEG
All of the above
Which of the following file formats is a Windows graphic device?
SVG
WMF
All of the above
Which of the following graphs can be used for simple summarization of data?
