1. Gary Klass Department of Politics and Government Illinois State University

2. D ATA P RESENTATION S TANDARDS “G RAPHICAL E XCELLENCE ” -- E DWARD T UFTE well-designed presentation of data of substance, statistics and design complex ideas communicated with clarity, precision and efficiency the greatest number of ideas in the shortest time with the least ink in the smallest space. Best example: Baseball statistics

3. F LORENCE N IGHTENGALE

5. Nurses arrive in November ‘54 Sanitary commission arrives in March ‘55

7. D ATA P RESENTATION P RINCIPLES Show the data Minimize the ink to data ratio Present many numbers in a small space Sort by a meaningful variable Tell the Truth -- Avoid data distortion Tables and charts should be self-explanatory Highlight Meaningful comparisons

8. M INIMIZE THE INK TO DATA RATIO Avoid using unnecessary legends (and color coding) Minimize gridlines (or vertical axis lines) Never use 3-D

13. S ORT THE D ATA ! By the most meaningful variable The Alphabet is not the most meaningful variable Time goes left to right

14. S ORT D ATA BY THE MOST IMPORTANT VARIABLE The Alphabet is not the most important variable

18. R EVISED CHART

19. S TACKED BAR : U PSIDE DOWN ?

20. R EVISED : O FFICERS A SSAULTED IN F LORIDA, 1991-2008

21. T IME GOES LEFT TO RIGHT

22. T ELL THE T RUTH ! Avoid Data Distortion

23. S CALING DISTORTION

27. New York State Criminal Justice, 2008 Crimestat Report

28. Note also: Top charts uses 12 numbers to represent 5 datapoints

29. M INIMIZE THE INK - TO - DATA RATIO Avoid all ChartJunk Never use 3-D Eliminate unnecessary lines

31. C HART J UNK : J UNKED C AR

32. D ON ’ T USE P IE C HARTS !!!!!!! Never use Pie Charts Never ever use 3-D Pie Charts Never compare data across two pie charts Beware of the Pie Chart’s friends: pyramids, cones, donuts and radars

33. B AR CHARTS ARE BETTER

36. T WO PIE CHARTS ARE WORSE THAN ONE

37. R EVISED C HART : P AROLEE E MPLOYMENT S TATUS, 2007-8

38. M AYBE A P IE : I F ONLY ONE SLICE MATTERS Labels on slices, No legend

39. the greatest number of ideas in the shortest time with the least ink in the smallest space. S IMPLE G RAPHICS B OXPLOTS, S PARKLINES, AND D OT - P LOTS D ATA - TO - INK RATIO

40. C ANCER SURVIVAL RATES IN THE US AND 20 E UROPEAN NATIONS

43. S PARKLINES : " INTENSE, SIMPLE, WORD SIZE GRAPHICS ” - T UFTE

45. S PARKLINE BARS

46. JJJ

47. W IN \L OSS SPARKLINE

49. D ASHBOARDS See: Stephen FewSee: Stephen Few Information Dashboard Design: The Effective Visual Communication of Data A dashboard is a visual display of the most important information needed to achieve one or more objectives; consolidated and arranged on a single screen so the information can be monitored at a glance.

50. D ASHBOARDS http://executivedashboards.org/2010/10/05/ good-executive-dashboards/ http://executivedashboards.org/2010/10/05/ good-executive-dashboards/

52. B AD DASHBOARDS TRY TO LOOK LIKE DASHBOARDS

53. B AD DASHBOARDS