Practice Library
All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
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A.
Use redundant cues such as labels or shapes in addition to color
B.
Use red and green without labels
C.
Encode all categories with similar hues
D.
Remove the legend
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Correct Answer: A. Use redundant cues such as labels or shapes in addition to color
Explanation:
Color should not be the only way to distinguish important categories.
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A.
It increases the number of observations
B.
It converts continuous data to discrete data
C.
It guarantees statistical significance
D.
It directs attention to important values, events, or interpretations
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Correct Answer: D. It directs attention to important values, events, or interpretations
Explanation:
Annotations help viewers notice the evidence that supports the message.
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A.
Taking a screenshot only
B.
Manually editing values in the image
C.
Saving the code and data-processing steps used to create each graph
D.
Removing all comments from the script
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Correct Answer: C. Saving the code and data-processing steps used to create each graph
Explanation:
Code records how data was transformed and how the chart was produced.
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A.
A legally certified final report
B.
A quickly produced display used to investigate data and generate questions
C.
A chart that must use animation
D.
A graph containing only theoretical values
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Correct Answer: B. A quickly produced display used to investigate data and generate questions
Explanation:
Exploratory graphs support rapid investigation rather than polished publication.
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A.
The display should highlight comparisons relevant to the decision
B.
The display should include every raw record
C.
The display should avoid all annotations
D.
The display should use only circular shapes
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Correct Answer: A. The display should highlight comparisons relevant to the decision
Explanation:
Decision-oriented visualization should foreground the quantities and trade-offs that matter.
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A.
Incorrect values in a data table
B.
Missing axis labels only
C.
A chart stored in the wrong file format
D.
Decorative elements that do not improve understanding of the data
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Correct Answer: D. Decorative elements that do not improve understanding of the data
Explanation:
Chart junk consumes attention without adding information.
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A.
The audience determines the sample mean
B.
The audience changes the raw observations
C.
The level of detail and terminology should match viewers' needs and knowledge
D.
The audience eliminates uncertainty
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Correct Answer: C. The level of detail and terminology should match viewers' needs and knowledge
Explanation:
A technical audience may need detail that would overwhelm a general audience.
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A.
Area of irregular shapes
B.
Position along a common scale
C.
Color hue
D.
Three-dimensional volume
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Correct Answer: B. Position along a common scale
Explanation:
People compare aligned positions more accurately than areas, hues, or volumes.
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A.
A mapping from data values to properties such as position, length, or color
B.
A method for encrypting a dataset
C.
A formula for generating random numbers
D.
A rule for naming variables
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Correct Answer: A. A mapping from data values to properties such as position, length, or color
Explanation:
Visual encoding translates abstract values into perceivable graphical features.
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A.
Missing values always equal zero
B.
Charts cannot contain numeric values
C.
Missingness guarantees independence
D.
Missingness can distort summaries and may itself contain information
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Correct Answer: D. Missingness can distort summaries and may itself contain information
Explanation:
Ignoring missing values can change the apparent distribution or relationship.
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A.
Lossless compression
B.
Deterministic sampling
C.
Overinterpretation of chance patterns
D.
Improved external validity
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Correct Answer: C. Overinterpretation of chance patterns
Explanation:
Repeated searching can uncover patterns that exist only by chance.
Choose an option to check your answer.
A.
To remove all measurement error
B.
To show patterns involving three or more variables simultaneously
C.
To convert data into text
D.
To ensure equal sample sizes
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Correct Answer: B. To show patterns involving three or more variables simultaneously
Explanation:
Multivariate displays encode several variables through position, color, size, shape, or facets.
