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...
Today
 Presenting visualizations in PowerPoint decks
 Dealing with graphical complexity
 Common visualization pitfalls
...
Presenting Visualizations
in PowerPoint Decks
quantilicious
“The purpose of visualization is insight, not pictures”
― Ben Shneiderman
Presenting Visualizations in PowerPoint Decks
 Serve your insights on a platter
 Stay brief and to the point
 Know when...
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...
Insight Generation Tips
 Point to the trend, outlier or feature
 Describe the trend, outlier or feature
 Refer to the g...
Serving Your Insights on a Platter
10
Maximum
salaries fell over
2008-2009,
coinciding with
the GFC.
Whilst
maximum
salari...
Show Your Insights
11
Maximum
salaries fell over
2008-2009,
coinciding with
the GFC.
Whilst
maximum
salaries
recovered in
...
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 dura...
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 co...
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...
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
...
Staged Introduction of Layered Time
Series
24
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50.00
60.00
70.00
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6
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21
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31
36
41
46
5...
Staged Introduction of Layered Time
Series
25
0.00
20.00
40.00
60.00
80.00
100.00
120.00
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6
11
16
21
26
31
36
41
46
51
56...
Staged Introduction of Layered Time
Series
26
0
20
40
60
80
100
120
140
1
6
11
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21
26
31
36
41
46
51
56
61
66
TVRs
Week
...
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
...
Staged Introduction – 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...
Paste as Excel Objects
29
 Hover for exact values
 Give Upper Management
ownership of your numbers (to
push your busines...
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.”
―EdwardTufte
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 $79.2
0
10
20
30
40
50
60
70
80
90
CompanyValuation($Billio...
If there are significant differences in the slice sizes, a pie chart can be OK (although a bar chart is better)
40
Pies vs...
Tufte’s 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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Published on: Mar 4, 2016
Published in: Automotive      
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Transcripts - Presentingviztoclients1 150120165529-conversion-gate02

  • 1. Presenting data visualizations Datalicious, 17th December 2014
  • 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  Tufte’s data-ink ratio 3
  • 4. Presenting Visualizations in PowerPoint Decks
  • 5. quantilicious “The purpose of visualization is insight, not pictures” ― 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 Macca’s 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
  • 20. Dealing with Graphical Complexity
  • 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 – 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
  • 30. Common Visualization Pitfalls
  • 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.” ―EdwardTufte
  • 35. Avoid 3D, Avoid Tilt 35 Resist 3D and Tilt Temptations
  • 36. 3 Fictitious Firms 36 Axis Scaling and Origin Setting
  • 37. 3 Fictitious Firms 37 The Origin
  • 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
  • 41. Tufte’s Data-Ink Ratio
  • 42. Data-Ink Ratio Formula 43
  • 43. 44 The Data Ink Ratio
  • 44. Further Reading  If you want to just read one book, make it this one 45
  • 45. Further Reading 46
  • 46. Thank You