CS 4460 Exam 1 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Visualization - CORRECT ANSWER visual reps. Of data used to amplify cognition
Insight, not pictures
Two main purposes of info vis - CORRECT ANSWER analysis
Presentation
When to use infovis - CORRECT ANSWER exploratory data analysis
Let yourself discover
When not to use infovis - CORRECT ANSWER when you know exactly what questions to ask
Analytic tasks for infovis - CORRECT ANSWER search
Browse
Analysis
Key benefits of visualization - CORRECT ANSWER -facilitating awareness and understanding
-helping to raise new questions and supply answers
-generating insights
-telling a story
Visual analytics - CORRECT ANSWER combines analytical reasoning and interactive
visualizations to help effectively understand large and complex data sets
Two key components of infovis - CORRECT ANSWER representation
Interaction
, Basic data types - CORRECT ANSWER -Nominal (categorical)
Example: gender
-Ordinal (obeys < relation, ordered set)
Example: freshman, sophomore, junior, senior
-Quantitative (can do math, equal intervals)
Example: distance, weight
Data marks - CORRECT ANSWER visual primitives in 2d or 3d space
Graphical properties of data marks encode data values (size, shape, color, orientation, texture, border,
thickness)
Aka visual encodings, graphical encodings, visual glyphs
Data items - CORRECT ANSWER entity in the data set aka data cases (rows)
Data attributes - CORRECT ANSWER a value measured for all data cases
Aka data features, variables (columns)
Univariate data - CORRECT ANSWER one variable
Data items shown on one dimension, and the value (only attribute) on the other
Could use line chart, bar graph
Bivariate data - CORRECT ANSWER two variables
Scatterplot if common, we want to see relationship
Trivariate data - CORRECT ANSWER three variables
3d scatterplot is possible but often isn't great
Alternative is to still use 2d but have visual property represent third variable (ex/ size)
Alternative is to represent each variable in its own explicit way
QUESTIONS AND CORRECT ANSWERS
Visualization - CORRECT ANSWER visual reps. Of data used to amplify cognition
Insight, not pictures
Two main purposes of info vis - CORRECT ANSWER analysis
Presentation
When to use infovis - CORRECT ANSWER exploratory data analysis
Let yourself discover
When not to use infovis - CORRECT ANSWER when you know exactly what questions to ask
Analytic tasks for infovis - CORRECT ANSWER search
Browse
Analysis
Key benefits of visualization - CORRECT ANSWER -facilitating awareness and understanding
-helping to raise new questions and supply answers
-generating insights
-telling a story
Visual analytics - CORRECT ANSWER combines analytical reasoning and interactive
visualizations to help effectively understand large and complex data sets
Two key components of infovis - CORRECT ANSWER representation
Interaction
, Basic data types - CORRECT ANSWER -Nominal (categorical)
Example: gender
-Ordinal (obeys < relation, ordered set)
Example: freshman, sophomore, junior, senior
-Quantitative (can do math, equal intervals)
Example: distance, weight
Data marks - CORRECT ANSWER visual primitives in 2d or 3d space
Graphical properties of data marks encode data values (size, shape, color, orientation, texture, border,
thickness)
Aka visual encodings, graphical encodings, visual glyphs
Data items - CORRECT ANSWER entity in the data set aka data cases (rows)
Data attributes - CORRECT ANSWER a value measured for all data cases
Aka data features, variables (columns)
Univariate data - CORRECT ANSWER one variable
Data items shown on one dimension, and the value (only attribute) on the other
Could use line chart, bar graph
Bivariate data - CORRECT ANSWER two variables
Scatterplot if common, we want to see relationship
Trivariate data - CORRECT ANSWER three variables
3d scatterplot is possible but often isn't great
Alternative is to still use 2d but have visual property represent third variable (ex/ size)
Alternative is to represent each variable in its own explicit way
