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Exploring, Displaying, and Examining Data
Chapter 16 Exploring, Displaying, and Examining Data
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Learning Objectives Understand . . .
That exploratory data analysis techniques provide insights and data diagnostics by emphasizing visual representations of the data. How cross-tabulation is used to examine relationships involving categorical variables, serves as a framework for later statistical testing, and makes an efficient tool for data visualization and later decision-making.
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Pull Quote “On a day-to-day basis, look for inspiration and ideas outside the research industry to influence your thinking. For example, data visualization could be inspired by an infographic you see in a favorite magazine, or even a piece of art you see in a museum.” Amanda Durkee, partner Zanthus
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Researcher Skill Improves Data Discovery
DDW is a global player in research services. As this ad proclaims, you can “push data into a template and get the job done,” but you are unlikely to make discoveries using a template process.
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Exploratory Data Analysis
Confirmatory
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Data Exploration, Examination, and Analysis in the Research Process
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Research Values the Unexpected
“It is precisely because the unexpected jolts us out of our preconceived notions, our assumptions, our certainties, that it is such a fertile source of innovation.” Peter Drucker, author Innovation and Entrepreneurship
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Frequency: Appropriate Social Networking Age
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Bar Chart
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Pie Chart
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Frequency Table
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Histogram
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Stem-and-Leaf Display
02268 24 018 3 1 06 36 6 8 5 7 9 10 11 12 13 14 15 16 17 18 19 20 21
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Pareto Diagram
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Boxplot Components
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Diagnostics with Boxplots
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Boxplot Comparison
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Mapping
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SPSS Cross-Tabulation
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Percentages in Cross-Tabulation
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Guidelines for Using Percentages
Don’t average percentages Don’t use too large a percentage Don’t use too small a base Changes should never exceed 100% Higher number is the denominator
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Cross-Tabulation with Control and Nested Variables
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Automatic Interaction Detection (AID)
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Exploratory Data Analysis
This Booth Research Services ad suggests that the researcher’s role is to make sense of data displays. Great data exploration and analysis delivers insight from data.
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Key Terms Automatic interaction detection (AID) Boxplot Cell
Confirmatory data analysis Contingency table Control variable Cross-tabulation Exploratory data analysis (EDA) Five-number summary Frequency table Histogram Interquartile range (IQR) Marginals Nonresistant statistics Outliers Pareto diagram Resistant statistics Stem-and-leaf display
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Additional Discussion opportunities
Chapter 16 Additional Discussion opportunities
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Snapshot: Novation No standarded vocabulary across companies
Serve variety of users Ad hoc analysis with sophisticated visualizations Big data with sophisticated analytical tool.
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Snapshot: Digital Natives vs. Digital Immigrants
30 subjects = 15 natives, 15 immigrants Monitored media behaviors 300 hours of real-time data Biometric Monitoring: emotional engagement
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Snapshot: Empowering Excel
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Snapshot: Internet-age Researchers
“The ability to take data—to be able to understand it, to process it, to extract value from it, to visualize it, to communicate it—that’s going to be a hugely important skill in the next decades ”
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Research Thought Leader
“As data availability continues to increase, the importance of identifying/filtering and analyzing relevant data can be a powerful way to gain an information advantage over our competition.” Tom H.C. Anderson founder & managing partner Anderson Analytics, LLC
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PulsePoint: Research Revelation
65 The percent boost in company revenue created by best practices in data quality.
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Geograph: Digital Camera Ownership
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CloseUp: Working with Data Tables
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CloseUp: Original Data Table
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CloseUp: Arranged by Spending Most to Least
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CloseUp: Arranged by Average Annual Purchases, Most to Least
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CloseUp: Arranged by Average Transaction, Most to Least
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CloseUp: Arranged by Estimated Average Transaction, Least to Most
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Exploring, Displaying, and Examining Data
Chapter 16 Exploring, Displaying, and Examining Data
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Photo Attributions Slide Source 4
Courtesy of Radius Global Market Research 18 Courtesy of RealtyTrac 21 Vstock/Alamy 24 Courtesy of Booth Research Services 27 Courtesy of Novation 28 Realistic Reflections 29 Courtesy of DecisionPro; Digital Vision/Getty Images 30 Vstock LLC/Getty Images
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