Survey Visualization Maria Tkatchenko CPSC 533C December 15, 2004.

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Presentation transcript:

Survey Visualization Maria Tkatchenko CPSC 533C December 15, 2004

Problem Survey composed of Questionnaire Collected data Want to explore relationships between responses to various questions

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)

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

Main elements of solution

Textual View

Questionnaire View

Correlation View

Raw Data View (1)

Raw Data View (2)

Control Panel

Implementation InfoVis Toolkit SGT Toolkit Java 2D and Swing Data formats CSV, converted to TQD TXT

Let’s explore one possible scenario

Find a question

Correlation View

Questionnaire View

Raw Data View

Interesting correlation with:

Correlation View

Questionnaire View

Interesting correlation with:

Raw Data View

Another scenario

Filter

Questions

Find a few correlations of interest

Select correlations

Cross-correlations

Questions?