Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis...
Transcript of Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis...
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Data Visualization Do’s & Don’ts
Janis Gulbis
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Janis Gulbis
Part of my job is to sit in the corner and look at paintings reports.
Mr. Bean
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Community Days April 12, 2019 Why
Analyze?
Why Visualize?
How?
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May the report creation force be
with you!Where Did It All Start?
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Baboons Can Count Too
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RESULTS
The baboons chose the container that had more peanuts in 67% of the time.
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You can’t improve what you can’t manage, you can’t manage what you can't control, and you can’t control what you don’t measure.
TOM DEMARKO
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Transforming Data Into Knowledge
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FACTS
90% of information transmitted to the brain is visual.
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FACTS
Visualizations help us detect patterns, trends, and correlations.
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FACTS
Visuals are more strongly tied to memory.
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FACTS
Visual content drives engagement.
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How To Choose The Best Chart Type?
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4 Basic Methods of Visual Data Analysis
Comparison
RelationshipDistribution
Composition
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Comparison
• Compare two or more values side by side
• List key values
• Rank values from best to worst or vice versa.
• Show patterns, gaps, spikes, outliers, or trends.
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Composition
• Show part to whole relationship. • Show how a total value can be divided into parts
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Distribution
• Comparison and Composition.
• Correlations, trends, patterns, shapes, clusters, averages, or outliers.
• Deviation or Variance analysis.
• Visualize related or unrelated data points.
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Relationship
• Show the relationship, correlation, or connection.
• Find correlations, trends, patterns, clusters, averages, or outliers.
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Do’s & Don’ts for Different Chart
Types
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Table Charts
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USE TABLES USE CHARTS
• You need to compare or look up individual values.
• You require precise values.
• Values involve multiple units of measure.
• The data has to communicate quantitative information, but not trends.
• You want to convey a message that is contained in the shape of the data.
• The chart is used to show a relationship between many values.
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Column Charts
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Column Charts Bad Usage
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Column Histogram Charts
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Stacked Column Charts
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DO’S DON’TS
• Compare of up to 5-7 categories.
• Time dimensions on the horizontal axis.
• Time from left to right.
• Value axis must start at zero.
• More than 7 categories
• Time dimension on Vertical axis
• Reorder chronological data charts.
• Numerical starts at a non-zero base.
• Using pattern lines or fills.
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Bar Charts
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Stacked Bar Charts
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Line Charts
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TimeLine Charts
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Area Charts
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Stacked Area Charts
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DO’S DON’TS
• Present continuous data in an interval scale, where intervals are equal in size.
• Emphasize rate of change or an overal trend
• Time from left to right – always.
• Remove guidelines to emphasize the trend, rate of change, and to reduce distraction.
• Do not skip values
• Don’t squeze or expand line charts
• No more than a 45-degree slope.
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Pie Charts and Donut Charts
Donut Use Pie Charts
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Pie Charts
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Better Use of Donut Charts
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DO’S DON’TS
• Make sure that the total sum of all segments equals 100 percent.
• Use pie charts only if you have less than 6 categories, unless there’s a clear winner you want to focus on.
• Ideally, there should be only two categories, like men and women visiting your website, or only one category, like a market share of your company, compared to the whole market.
• Don’t use a pie chart if the category values are almost identical or completely different.
• Don’t use 3D or blow apart effects — they reduce comprehension and show incorrect proportions.
• Don’t use a pie charts to compare individual sections to each other or to represent exact values.
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Scatter Charts
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Scatter Bubble Charts
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Map Charts
![Page 107: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/107.jpg)
Map Charts
![Page 108: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/108.jpg)
Gantt Charts
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Gantt Charts
![Page 110: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/110.jpg)
Gauge Charts
![Page 111: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/111.jpg)
Mixed Charts
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Conclusion
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Remove any excess information, lines,
colors, and text from a chart that
does not add value.
![Page 114: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/114.jpg)
Sort your data in ascending or
descending order by the value
(except for time dimension)
![Page 115: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/115.jpg)
Use labels directly on the line, column,
bar, pie, charts when possible, to
avoid indirect look-up.
![Page 116: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/116.jpg)
To compare the same measure over
different time periods, use same
color with different intensity.
![Page 117: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/117.jpg)
To compare different measures
by category, use different colors for
each measure.
![Page 118: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/118.jpg)
Try to use the same color for each
measure across all your reports.
![Page 119: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/119.jpg)
Check how your charts would look in grayscale. If you cannot distinguish color differences,
you should change hue and saturation
of colors.
![Page 120: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/120.jpg)
Use Time on horizontal axis.
Left to right. Don’t skip periods, even if there are no
values.
![Page 121: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/121.jpg)
Don’t add too much information to a
single chart.
![Page 123: Data Visualization - eazyBI Community...Data Visualization Do’s & Don’ts Janis Gulbis Janis Gulbis Part of my job is to sit in the corner and look at paintings reports. Mr. Bean](https://reader036.fdocuments.us/reader036/viewer/2022071218/605121cfea8b75146e7ff384/html5/thumbnails/123.jpg)
Thank you!