Diagram, Interesting, Stimulus

In spite of the fact that the pie chart was a true graphic innovation when introduced by Playfair (1801), and is an excellent display for comparing parts of a whole, the pie chart has subject to more graphic abuse than almost any other graphic form.
Here is a rogues gallery of a few of the most evil pies I've seen recently.
Michael Friendly

NSW 7-10 Syllabus:
DS DataDS4.1 Data Representation
New NSW K-10 Syllabus for the Australian Curriculum:
Statistics and ProbabilityMA4-19SP Data Collection and Representation

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