Data visualization should be designed with the assumption that tooltips and rollovers will likely not be used by viewers. Charts and graphs should be able to stand alone and convey their message without additional elements. Designers should focus first on clarity and ensuring the core message and findings can be understood from the visual itself.

1. For Better Data Visualization

2. For Better Data Visualization
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3. 1

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37. If you make a tooltip or rollover,
assume no one will ever see it
Archie Tse, NYT

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55. Leland Wilkinson, “Grammar of Graphics”

56. Leland Wilkinson, “Grammar of Graphics”