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Survey Visualization Maria Tkatchenko CPSC 533C December 15, 2004
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Problem Survey composed of Questionnaire Collected data Want to explore relationships between responses to various questions
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Data set National Election Studies center’s pre- and post-election surveys National Center for Chronic Disease Prevention and Health Promotion Behavioral Risk Factor survey 1K - 100K respondents 100s of questions (dimensions)
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Statistics Correlation measure of “closeness” of two sets of data degree to which the association of two variables approaches a linear function ranges from -1 to 1 higher (absolute) value is better
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Main elements of solution
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Textual View
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Questionnaire View
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Correlation View
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Raw Data View (1)
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Raw Data View (2)
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Control Panel
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Implementation InfoVis Toolkit SGT Toolkit Java 2D and Swing Data formats CSV, converted to TQD TXT
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Let’s explore one possible scenario
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Find a question
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Correlation View
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Questionnaire View
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Raw Data View
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Interesting correlation with:
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Correlation View
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Questionnaire View
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Interesting correlation with:
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Raw Data View
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Another scenario
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Filter
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Questions
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Find a few correlations of interest
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Select correlations
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Cross-correlations
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Questions?
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