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IT’S NOT ABOUT PIE WHEN IT COMES TO THE FACTS…

IT’S NOT ABOUT PIE WHEN IT COMES TO THE FACTS…. David Onder, Alison Joseph, John Bradsher. SAIR 2011. 9352 students Master’s Comprehensive Mountain location Residential and Distance. Eye on the pies. Which is the largest in Year 1 - Green, Blue, or Purple?.

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IT’S NOT ABOUT PIE WHEN IT COMES TO THE FACTS…

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  1. IT’S NOT ABOUT PIE WHEN IT COMES TO THE FACTS… David Onder, Alison Joseph, John Bradsher SAIR 2011

  2. 9352 students Master’s Comprehensive Mountain location Residential and Distance

  3. Eye on the pies Which is the largest in Year 1 - Green, Blue, or Purple? Which have increased from Year 1 to Year 2? NONE!

  4. Purpose Conveying information to stakeholders • What is important? • What answers are sought? • What can we learn from this table or graph? • Is the information easy to decipher?

  5. Inspiration Edward Tufte Stephen Few Juice Analytics Others

  6. Guiding principles • Consistency • color • text • layout • Maximize Data-Ink ratio (Gestalt principles) • Reduce Chartjunk • Chart type • Use of color All that glitters is NOT gold!

  7. Quantitative perception Very Precise Not Very Precise Length 2-D Position Width Size Intensity Blur

  8. "most quantitative data analysis can be performed quite well ... using only four types of objects" Few, 2004, p. 46 Points Bars Boxes Lines

  9. Freshman Applicants, Acceptances & Enrollees

  10. We actually didn’t do this, but we probably should have

  11. Here is the overall change …

  12. Here is the overall change … Viola!

  13. Side by side

  14. Neither is a good option Aside Pie and Line charts comparing multiple criteria

  15. Remember our purpose

  16. Race, Load, And GenderFirst-time Freshmen 844 4+2 = 6 116 1555 7.5%

  17. Race, Load, And GenderFirst-time Freshmen New

  18. Without axis break Aside

  19. As bar chart with axis break Aside

  20. Aside As bar chart Aside

  21. Junior Senior Enrollment Including Second Majors

  22. Geographic Distribution First-time Freshmen Enrollment by County http://www.clearlyandsimply.com/clearly_and_simply/2009/06/choropleth-maps-with-excel.html

  23. HS GPA http://peltiertech.com/WordPress/excel-box-and-whisker-diagrams-box-plots/

  24. Resources • Edward Tufte (http://www.edwardtufte.com/) • The Visual Display of Quantitative Information, 2001 • Stephen Few (http://www.perceptualedge.com/) • Show Me the Numbers, 2004 • Information Dashboard Design, 2006 • Now you see it, 2009 • http://www.extremepresentation.com/design/charts/ • http://www.juiceanalytics.com/chart-chooser/ • Purna Duggirala (http://chandoo.org/wp/ ) – Excel help • Jon Peltier (http://peltiertech.com) – Excel templates

  25. Contact Information David Onder, Assessment Coordinatordmonder@wcu.edu Alison Joseph, Research Specialistajoseph@wcu.edu John Bradsher, Senior Undergraduate Research Assistantjcbradsher1@catamount.wcu.edu Office of Institutional Planning and Effectivenessopie.wcu.edu, (828) 227-7239 Special thanks to Stephanie Virgo

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