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Min-Seok Pang
Management Information Systems
Fox School of Business, Temple University
Sep. 29th, 2016
MIS 0855 Fall 2016 – Data
Science
Week 5 – Data Visualization (I)
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2MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
Data Visualization
You have got a good data source.
You have several hypotheses and sensible theories to support them.
You have got an interesting analysis result.
How to present our data and analysis outcome?
http://golancourses.net/2010spring/01/18/looking-outwards-data-visualization/
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3MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
http://www.placeofmine.com/blog/2013/08/20/facebook-status-updates-reveal-peak-break-up-times/
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4MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
Data Visualization Principles
Principle #1 – Have a clear message to deliver.
Principle #2 – Select a delivery method based on the message to deliver.
Principle #3 – Use as little ink as possible.
Principle #4 – Do not mislead your audience.
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5MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
What messages does this tell?
Causes of death in the Crimean war:
Blue – preventable diseasesRed – woundsBlack – other
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6MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
http://www.nytimes.com/interactive/2014/04/24/upshot/facebook-baseball-map.html?_r=0
What messages does this tell?
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7MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
What
messages
does
this tell?
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8MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
http://www.nytimes.com/interactive/2015/12/10/us/gun-sales-terrorism-obama-restrictions.html?smid=pl-share&_r=0
What messages does this tell?
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9MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
http://www.bloomberg.com/graphics/2015-drug-prices/
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10MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
http://www.scoopnest.com/user/ECONdailycharts/735485061693362177
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11MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
Principle #2
Select a delivery method based on the message to deliver.
Table vs. Graph?
Bar vs. Line vs. Scatter vs. Pie?
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12MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
Why a Table?
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13MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
http://www.nytimes.com/interactive/2014/04/24/upshot/facebook-baseball-map.html?_r=0
Why a Map?
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14MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
http://www.nytimes.com/interactive/2015/12/10/us/gun-sales-terrorism-obama-restrictions.html?smid=pl-share&_r=0
Why a Line Chart?
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15MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
Why a
Scatterplot?
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16MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
http://www.bloomberg.com/graphics/2015-drug-prices/
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17MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
Which One Is
More Effective?
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18MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
Which One Is
More Effective?
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19MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
Table is better …
when it needs to display individual, precise values
when information to be communicated involves more than one unit of measure (e.g. # of people, ratio, # of days in one page)
when summary and detail values need to be delivered
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20MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
Graph is better …
to display a pattern or a relationship between quantitative values
to deliver a large amount of quantitative values
to make your audiences’ life easier!
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21MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
A bar chart is good to visualize a ranking.
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22MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
A bar chart is NOT good to visualize a trend.
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23MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
A line chart is good to visualize a trend.
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24MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
A bar chart is NOT good to visualize a trend.
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25MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
A line chart is good to visualize a trend.
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26MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
A pie chart is good to visualize ratios.
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27MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
A bar chart is NOT good to visualize
correlation.
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28MIS 0855 Fall 2016 – Week 5 – Data Visualization (I)
MIS 0855 – Data Science Min-Seok Pang – Sep.29.2016
A scatterplot is
good to
visualize
correlation.