Data Visualization Data visualization principles. Tell a story

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Presentation transcript:

Data Visualization Data visualization principles. Tell a story Graphical integrity (lie factor) Minimize graphical complexity (data ink, chartjunk)

Bonus Assignment Issues: Tell a Story Graphical Integrity Chart #1: Issues: Tell a Story The vertical axis isn’t labeled. We don’t know the unit. Graphical Integrity The vertical axis does not start from zero Graphical Complexity Horizontal and vertical lines are unnecessary (Chartjunk)

Bonus Assignment Issues: Tell a Story Graphical Integrity Chart #1: Issues: Tell a Story The vertical axis isn’t labeled. We don’t know the unit. Graphical Integrity The vertical axis does not start from zero Graphical Complexity Horizontal and vertical lines are unnecessary (Chartjunk) This also works

Bonus Assignment Issues: Graphical Integrity Graphical Complexity Chart #2: Issues: Graphical Integrity The 3D chart makes it difficult to compare the sizes Graphical Complexity The 3D chart requires more ink (Chartjunk)

Bonus Assignment Issues: Tell a Story Graphical Integrity Chart #3: Issues: Tell a Story Vertical axis isn’t labeled. We don’t know the units Because there are many states to compare, horizontal lines may be helpful Graphical Integrity The 3D chart makes it difficult to compare sizes The cone-shaped bars make it even harder to compare sizes Graphical Complexity The 3D chart requires more ink (Chartjunk) The number labels are unnecessary