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Presentingviztoclients1 150120165529-conversion-gate02

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Atul Purohit
Atul Purohit

The document discusses best practices for presenting data visualizations. It provides tips for presenting visualizations in PowerPoint decks, including serving insights directly, being brief and to the point, and providing memorable takeaways. It also discusses dealing with graphical complexity through techniques like staged introduction of layered charts. Additionally, it covers common visualization pitfalls such as misleading uses of 3D and issues with axis scaling.

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Presenting data visualizations Datalicious, 17th December 2014
quantilicious The greatest value of a picture is when it forces us to notice what we never expected to see. - John Tukey, 1977
Today ? Presenting visualizations in PowerPoint decks ? Dealing with graphical complexity ? Common visualization pitfalls ? Tuftes data-ink ratio 3
Presenting Visualizations in PowerPoint Decks
quantilicious The purpose of visualization is insight, not pictures D Ben Shneiderman
Presenting Visualizations in PowerPoint Decks ? Serve your insights on a platter ? Stay brief and to the point ? Know when to move on ? Be prepared to shift course 6 ? Tell a consistent story ? Have supporting slides ready to go ? Do the cognitive work for your audience ? Provide memorable takeaway sound bites
Serve Your Insights on Platter 7 CEO salary has risen and fallen over time
Serve Your Insights on Platter 8 CEO salary has risen and fallen over time ? Not clear whether the insight is referring to Average Salaries or Maximum Salaries ? Forces the reader to do the work ? No time reference ? Does not tell the whole story (maximum salary rose, then fell, then rose again)
Insight Generation Tips ? Point to the trend, outlier or feature ? Describe the trend, outlier or feature ? Refer to the greater context that may not feature in the data 9 ? Include a time reference ? Add value beyond what is obvious on the chart ? Leave no chart variable behind
Serving Your Insights on a Platter 10 Maximum salaries fell over 2008-2009, coinciding with the GFC. Whilst maximum salaries recovered in 2012, they have still not reached pre-GFC levels. On average, CEO salaries have not increased in real terms over 2007-2012
Show Your Insights 11 Maximum salaries fell over 2008-2009, coinciding with the GFC. Whilst maximum salaries recovered in 2012, they have still not reached pre-GFC levels. On average, CEO salaries have not increased in real terms over the previous 6 years GFC
Super Smash Brothers Melee Character Rankings
Super Smash Brothers Melee Consistent High Performers
Super Smash Brothers Melee Consistent High Performers Consistent high performers remained in the top 5 over the study duration
Super Smash Brothers Melee Biggest Improvers
Super Smash Brothers Melee Biggest Decliners
Create Memorable Soundbites 17 ? Jollibee has gained 5% market share relative to McDonalds ? Digital marketing spend consumed a greater proportion of the total marketing budget. ? Jollibee fries 5% from Maccas Market Share ? From data to dollars: digital marketing is an increasingly important channel
Borders vs Amazon Growth and Volume 18 Amazon Borders
Borders Has Drowned in the Amazon 19
Dealing with Graphical Complexity
Higher Levels of Chart Complexity 21 ? Dual Axes Charts OK ? Know your subject matter ? Serve your insights on a platter
Insights with Higher Levels of Chart Complex 22 More opportunities closed in April- May led to higher sales revenue in May-June (EOFY) More opportunities lost in July-August followed by a period of low sales End of FinancialYear
Dual Axes, Quad Variable Time Series and Ba Chart 23 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 0 20 40 60 80 100 120 140 1 6 11 16 21 26 31 36 41 46 51 56 61 66 Sales CentsPerUnit/%Distribution/TVRs Week TVRs Price Distribution Volume Sales
Staged Introduction of Layered Time Series 24 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 1 6 11 16 21 26 31 36 41 46 51 56 61 66 CentsPerUnit Week Price
Staged Introduction of Layered Time Series 25 0.00 20.00 40.00 60.00 80.00 100.00 120.00 1 6 11 16 21 26 31 36 41 46 51 56 61 66 CentsPerLitre/%Distribution Week Price Distribution
Staged Introduction of Layered Time Series 26 0 20 40 60 80 100 120 140 1 6 11 16 21 26 31 36 41 46 51 56 61 66 TVRs Week Series4
Staged Introduction of Layered Time Series 27 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 0 20 40 60 80 100 120 140 1 6 11 16 21 26 31 36 41 46 51 56 61 66 Sales TVRs Week TVRs Volume Sales
Staged Introduction C The Final Product 28 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 0 20 40 60 80 100 120 140 1 6 11 16 21 26 31 36 41 46 51 56 61 66 Sales CentsPerUnit/%Distribution/TVRs Week TVRs Price Distribution Volume Sales
Paste as Excel Objects 29 ? Hover for exact values ? Give Upper Management ownership of your numbers (to push your business case) ? Delete variables on the fly 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 1 6 11 16 21 26 31 36 41 46 51 56 61 66 Sales CentsPerUnit/%Distribution/TVRs Week Price Volume Sales
Common Visualization Pitfalls
Issues with 3D Visualization 3D Can Be Misleading 31
3D Can Be Misleading 32 Issues with 3D Visualization
3D Pie Charts = Visual Bias 33 Poll: Issues with 3D Visualization
quantilicious Above all else show the data. DEdwardTufte
Avoid 3D, Avoid Tilt 35 Resist 3D and Tilt Temptations
3 Fictitious Firms 36 Axis Scaling and Origin Setting
3 Fictitious Firms 37 The Origin
Which chart shows the most accurate trend? 38 Axis Scaling
39 $60.0 $66.2 $79.2 $81.6 $76.8 $79.2 $84.0 $84.0 $84.0 $81.6 $79.2 0 10 20 30 40 50 60 70 80 90 CompanyValuation($Billions) Facebook, Inc.: Company Valuation Be Mindful of Gridlines and Borders
If there are significant differences in the slice sizes, a pie chart can be OK (although a bar chart is better) 40 Pies vs Bars
Presentingviztoclients1 150120165529-conversion-gate02
Tuftes Data-Ink Ratio
Data-Ink Ratio Formula 43
44 The Data Ink Ratio
Further Reading ? If you want to just read one book, make it this one 45
Further Reading 46
Thank You

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Presentingviztoclients1 150120165529-conversion-gate02

  • 2. quantilicious The greatest value of a picture is when it forces us to notice what we never expected to see. - John Tukey, 1977
  • 3. Today ? Presenting visualizations in PowerPoint decks ? Dealing with graphical complexity ? Common visualization pitfalls ? Tuftes data-ink ratio 3
  • 5. quantilicious The purpose of visualization is insight, not pictures D Ben Shneiderman
  • 6. Presenting Visualizations in PowerPoint Decks ? Serve your insights on a platter ? Stay brief and to the point ? Know when to move on ? Be prepared to shift course 6 ? Tell a consistent story ? Have supporting slides ready to go ? Do the cognitive work for your audience ? Provide memorable takeaway sound bites
  • 7. Serve Your Insights on Platter 7 CEO salary has risen and fallen over time
  • 8. Serve Your Insights on Platter 8 CEO salary has risen and fallen over time ? Not clear whether the insight is referring to Average Salaries or Maximum Salaries ? Forces the reader to do the work ? No time reference ? Does not tell the whole story (maximum salary rose, then fell, then rose again)
  • 9. Insight Generation Tips ? Point to the trend, outlier or feature ? Describe the trend, outlier or feature ? Refer to the greater context that may not feature in the data 9 ? Include a time reference ? Add value beyond what is obvious on the chart ? Leave no chart variable behind
  • 10. Serving Your Insights on a Platter 10 Maximum salaries fell over 2008-2009, coinciding with the GFC. Whilst maximum salaries recovered in 2012, they have still not reached pre-GFC levels. On average, CEO salaries have not increased in real terms over 2007-2012
  • 11. Show Your Insights 11 Maximum salaries fell over 2008-2009, coinciding with the GFC. Whilst maximum salaries recovered in 2012, they have still not reached pre-GFC levels. On average, CEO salaries have not increased in real terms over the previous 6 years GFC
  • 12. Super Smash Brothers Melee Character Rankings
  • 13. Super Smash Brothers Melee Consistent High Performers
  • 14. Super Smash Brothers Melee Consistent High Performers Consistent high performers remained in the top 5 over the study duration
  • 15. Super Smash Brothers Melee Biggest Improvers
  • 16. Super Smash Brothers Melee Biggest Decliners
  • 17. Create Memorable Soundbites 17 ? Jollibee has gained 5% market share relative to McDonalds ? Digital marketing spend consumed a greater proportion of the total marketing budget. ? Jollibee fries 5% from Maccas Market Share ? From data to dollars: digital marketing is an increasingly important channel
  • 18. Borders vs Amazon Growth and Volume 18 Amazon Borders
  • 19. Borders Has Drowned in the Amazon 19
  • 21. Higher Levels of Chart Complexity 21 ? Dual Axes Charts OK ? Know your subject matter ? Serve your insights on a platter
  • 22. Insights with Higher Levels of Chart Complex 22 More opportunities closed in April- May led to higher sales revenue in May-June (EOFY) More opportunities lost in July-August followed by a period of low sales End of FinancialYear
  • 23. Dual Axes, Quad Variable Time Series and Ba Chart 23 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 0 20 40 60 80 100 120 140 1 6 11 16 21 26 31 36 41 46 51 56 61 66 Sales CentsPerUnit/%Distribution/TVRs Week TVRs Price Distribution Volume Sales
  • 24. Staged Introduction of Layered Time Series 24 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 1 6 11 16 21 26 31 36 41 46 51 56 61 66 CentsPerUnit Week Price
  • 25. Staged Introduction of Layered Time Series 25 0.00 20.00 40.00 60.00 80.00 100.00 120.00 1 6 11 16 21 26 31 36 41 46 51 56 61 66 CentsPerLitre/%Distribution Week Price Distribution
  • 26. Staged Introduction of Layered Time Series 26 0 20 40 60 80 100 120 140 1 6 11 16 21 26 31 36 41 46 51 56 61 66 TVRs Week Series4
  • 27. Staged Introduction of Layered Time Series 27 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 0 20 40 60 80 100 120 140 1 6 11 16 21 26 31 36 41 46 51 56 61 66 Sales TVRs Week TVRs Volume Sales
  • 28. Staged Introduction C The Final Product 28 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 0 20 40 60 80 100 120 140 1 6 11 16 21 26 31 36 41 46 51 56 61 66 Sales CentsPerUnit/%Distribution/TVRs Week TVRs Price Distribution Volume Sales
  • 29. Paste as Excel Objects 29 ? Hover for exact values ? Give Upper Management ownership of your numbers (to push your business case) ? Delete variables on the fly 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 1 6 11 16 21 26 31 36 41 46 51 56 61 66 Sales CentsPerUnit/%Distribution/TVRs Week Price Volume Sales
  • 31. Issues with 3D Visualization 3D Can Be Misleading 31
  • 32. 3D Can Be Misleading 32 Issues with 3D Visualization
  • 33. 3D Pie Charts = Visual Bias 33 Poll: Issues with 3D Visualization
  • 34. quantilicious Above all else show the data. DEdwardTufte
  • 35. Avoid 3D, Avoid Tilt 35 Resist 3D and Tilt Temptations
  • 36. 3 Fictitious Firms 36 Axis Scaling and Origin Setting
  • 38. Which chart shows the most accurate trend? 38 Axis Scaling
  • 39. 39 $60.0 $66.2 $79.2 $81.6 $76.8 $79.2 $84.0 $84.0 $84.0 $81.6 $79.2 0 10 20 30 40 50 60 70 80 90 CompanyValuation($Billions) Facebook, Inc.: Company Valuation Be Mindful of Gridlines and Borders
  • 40. If there are significant differences in the slice sizes, a pie chart can be OK (although a bar chart is better) 40 Pies vs Bars
  • 45. Further Reading ? If you want to just read one book, make it this one 45