data visualizations & infographics
TRANSCRIPT
Data Visualizations & Infographics
(it looks cool, but what is it telling you?)
Cid FrietagDoIT Academic Technology
March 20, 2018
UW Madison Learning Analytics Series
• What are some of the data and/or visualizations that you commonly use, or would like to use?
• What insights and/or decisions can the data/visualizations help you make?
• What communications to others would the data/visualizations help you make?
http://media.nbcchicago.com/images/1200*900/Fox's+Pie+Chart.jpg
Why visualize data?
X10.0
8.013.0
9.011.014.0
6.04.0
12.07.05.0
Y8.046.957.588.818.339.967.244.26
10.844.825.68
X10.0
8.013.0
9.011.014.0
6.04.0
12.07.05.0
Y9.148.148.748.779.268.106.133.109.137.264.74
X10.0
8.013.0
9.011.014.0
6.04.0
12.07.05.0
Y7.466.77
12.747.117.818.846.085.398.156.425.73
X8.08.08.08.08.08.08.0
19.08.08.08.0
Y6.585.767.718.848.477.045.25
12.505.567.916.89
Mean 9.00 7.50
Sum 99.0 82.51
SD 3.16 1.94
r .82
9.00 7.50
99.0 82.51
3.16 1.94
.82
9.00 7.50
99.0 82.50
3.16 1.94
.82
9.00 7.50
99.0 82.51
3.16 1.94
.82
F.J. Anscombe, "Graphs in Statistical Analysis," American Statistician, vol. 27 (Feb 1973), pp. 17-21.
How visualizations work (the basics)
Human Eye-Brain System
http://commons.wikimedia.org/wiki/File:Corgi_puppy.png
Abstraction & Emotion
Visualization and Infographic design
Some highlights
Telling a story with data
Insights
Message
Context
Source
Audience
Impact?
Truth
Clarity
Editing
Take-away?
Visualization and/or Infographic?
Algorithm Human
Repeatable One-off
Present data Present a message
Insight Information
zendesk.com: Monica Norton
New York Times, March 15, 2014
http://speakingppt.com/2011/05/09/does-chartjunk-really-trash-your-graphs-4-discoveries-from-research/
Models re: how and why Visualization made
Modified from DiBiase, 1990
VISUAL THINKING VISUAL COMMUNICATION
PRIVATE REALM PUBLIC REALM
Exploration
ConfirmationSynthesis
Presentation
Range of functions of visual methods in an idealized research sequence
Visualization’s role changes in a research-to-communication process
DiBiase, David. 1990. Visualization in the Earth Sciences. Department of Geography, The Pennsylvania State University
Card, et al -- Modified
Deconstructing the basics of visualization design
Visual structure?What’s the structure good at?
ComparisonDistributionCompositionRelationshipConnectionsLocations
Does the data fit the structure?
Graphic Elements (size, shape, color)Quantity or rank order?Different categories
What’s connected? What’s separate?
Details? At-a-glance?
How much is on one visual?
Context
Audience
Is there a message intended?
One-off? Or frequently updated?
Visual Structure
Chart chooser
A starting point
http://labs.juiceanalytics.com/chartchooser/index.html
Juice Analytics
Structured Data à Visual Structure
Does the data make sense in the structure?
http://s3.amazonaws.com/dk-production/images/75745/large/obamacareenrollment-fncchart.jpg?1396284158
http://s3.amazonaws.com/dk-production/images/75901/large/foxcorrectedobamacarechart.jpg?1396367232
More/Less?Quantity or Rank
Size
Color
Size AND Color
Shape
Color
Shape AND Color
Different?Categories
Position based on number/rank values
0 2010 Cat HorseDog
Position based on categories
20
Parts àWhole Connections
Movement/Flow1
2
3a3b
Location
Deconstruct Data Visualization Examples
Example: UW-Madison Enrollments
Most data visualizations….
Quantity, Ranking
Presence/absence
Categories
Points in time,
changes over time
Relationships,
connections
Locations
Alone or in combinations
What data/visualizations are you interested in?
What might they look like?What visual structure?
Comparisons, points in time….
What data do you collect?
Who is the audience?
Visualization Design
Visual Hierarchy
!!! Read this First !!!Then read this
And then maybe read this
Dimensions of Complexity
Design matters
Same Data, Different Maps
Default “Buckets”* Quintiles ~Even ranges of values
*Google Fusion Tables, March 2018
< -0.5
-0.5 – 0.0
0.0 - 0.5
0.5 – 1.0
> 1.0
82%
68% 56%
43%Elting, Linda S., et al. "Influence of data display formats on physician investigators' decisions to stop clinical trials: prospective trial with repeated measures." Bmj 318.7197 (1999): 1527-1531.
Data Collection & Classification
What data collected? (or left out?)
What’s your favorite color?RedBlueYellow
What’s your favorite color?
Classification
Wizard of OzDialog
https://mapr.com/blog/driving-insights-network-graphs/
Contributed by Joseph Blue
All Occupations by Education:Income
Most data visualizations….Quantity, RankingPresence/absenceCategoriesPoints in time, changes over timeRelationships, connectionsLocations
Alone or in combinations
Some Links
UW-Madison Institutional Data dataviz.wisc.edu(UW-Madison Staff have access)
Visualizing data visualisingdata.com
FlowingData flowingdata.com
The functional art thefunctionalart.com
What’s Going On in This Graph? NY Times www.nytimes.com/column/whats-going-on-in-this-graph
Data Stories podcast datastori.es
(some) Books I likeThe Functional Art: An introduction to information graphics and visualization by Alberto Cairo
Design for Information: An Introduction to the Histories, Theories, and Best Practices Behind Effective Information Visualizationby Isabel Meirelles
Designing Data Visualizations: Representing Informational Relationshipsby Noah Iliinsky and Julie Steele
Data Points: Visualization That Means Somethingby Nathan Yau
(some) Tools, and impact on process
Excel
Google Fusion Tables
