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Designing & Using Charts & Graphs PowerPoint PPT Presentation


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Designing & Using Charts & Graphs. Compiled by: Jim Lucas Modified by: Luke Reese. Overview. After this presentation, you should better understand: Using the right chart or graph to present your information Design principles for charts and graphs

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Designing & Using Charts & Graphs

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Designing using charts graphs l.jpg

Designing & Using Charts & Graphs

Compiled by: Jim Lucas

Modified by: Luke Reese


Overview l.jpg

Overview

  • After this presentation, you should better understand:

    • Using the right chart or graph to present your information

    • Design principles for charts and graphs

    • How to lie and cheat with graphs, numbers and statistics


Use the right tool l.jpg

Use the right tool


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Pie charts

  • Slice represents relative amount of a whole

  • Slices should be percentages—not absolute values

  • Good design:

    • Easily distinguished pie slices (remember black and white)

    • Slice size decreases clockwise around pie

    • Label the pie directly


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Things to avoid on a pie

  • Exploding all the slices

  • Inconsistent labeling

  • Legends

  • No labeling


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Proportional bar chart

  • Used to show proportional amounts as a pie chart

  • Use side scale for more precise measures

  • Make it wide enough to read

  • If you have multiple bars, put the least varying factors first


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Bar charts

  • Use to show change in ordinal or nominal data

  • Usually vertical, but use horizontal if it makes sense

  • Color code consistently

  • Avoid over emphasizing one line

  • If you use a legend, have it follow the order of your bars


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Line graphs

  • Used to show change in trends and continuous data

  • Vary color or line weight to call attention to specific points

  • Points on the line are important for precise values

  • Be consistent with labeling


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Line graphs continued

  • Put warm, bright colored lines on top

  • Use a scale that accurately reflects the change in information


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Picture chart or graph

  • You can use pictures in the place of a bar chart or graph

  • Follow color and theme conventions

  • Have the pictures align in the same direction

  • Vary size not color or shading


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Palm Tree Growth


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Palm Tree Growth


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Tips for diagrams and maps

  • Follow the culture of the information

  • Identify relationships on a chart

  • Use color, line weight, shading to organize information

  • Show only relevant information

  • Avoid gridlines unless needed


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Lying with graphs

  • Altering the y-axis

  • Distorted shapes

  • Uneven start point

  • Using color, lines or other technique to distort differences

  • Using 3-D effects or distortions


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Michigan’s Economy


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Lying charts and statistics

  • Percentages and absolute values

  • Numbers are relative

  • Squishy numbers and figures

  • Value labels

  • Error


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Absolute values

Number of cattle deaths attributed to coyotes


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Absolute values vs. percentages

Cattle deaths attributed to coyotes


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Relativity

  • Cattle deaths attributed to coyotes over 5 years


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Relativity II

Cattle deaths attributed to coyotes over 5 years


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