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Misleading Graphs Know the dirty tricks so you wont be deceived.

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Presentation on theme: "Misleading Graphs Know the dirty tricks so you wont be deceived."— Presentation transcript:

1 Misleading Graphs Know the dirty tricks so you wont be deceived

2 Theres an entire blog! She even had a Bad Graph Contest 2/05/30/winner-of-the-bad-graph-contest- announced-2/

3 Manipulate the Vertical Axis OriginalVertical axis chopped Magnify differences Distort proportionality

4 Manipulate the vertical axis OriginalVertical axis extended Everybody seems shorter Tax the rich, spread the poverty

5 Manipulate the Data Selection OriginalChopped off some years Choose a beginning year to make it look like theres been astounding growth. Or to make it look like theres been little growth.

6 Manipulate the Horizontal Axis OriginalStretch or compress Make slopes (rates of change) look steeper (compress the axis) or more gradual (stretch the axis)

7 Graphic Arts Overkill 3-D perspectives that distort plain meaning

8 More web references – agrams/ agrams/ – chooser-helps-you-choose-charts/ chooser-helps-you-choose-charts/


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