Learning R for Data Visualization (Video 9)
Interactive Video
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Information Technology (IT), Architecture, Social Studies
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University
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Practice Problem
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of using bar charts?
To represent categorical variables
To show relationships between variables
To represent continuous data
To display time series data
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do bar charts differ from histograms?
Bar charts use lines instead of bars
Bar charts are used for time series data
Bar charts represent continuous data
Bar charts create one bar for each group
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which function is used in GGplot2 to create a bar chart?
GO_scatter
GO_histogram
GO_line
GO_bar
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What option must be set to plot data as they are in GGplot2?
stat = 'summary'
stat = 'identity'
stat = 'default'
stat = 'raw'
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is automatic data ordering useful for bar charts?
It reduces the file size
It simplifies the code
It is useful for large datasets
It enhances the visual appeal
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