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Designing & Using Charts & Graphs - PowerPoint PPT Presentation

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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Presentation Transcript

Designing & Using Charts & Graphs

Compiled by: Jim Lucas

Modified by: Luke Reese

• 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

• 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

• Exploding all the slices

• Inconsistent labeling

• Legends

• No labeling

• 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

• 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

• 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

• Put warm, bright colored lines on top

• Use a scale that accurately reflects the change in information

• 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

• 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

• Altering the y-axis

• Distorted shapes

• Uneven start point

• Using color, lines or other technique to distort differences

• Using 3-D effects or distortions

• Percentages and absolute values

• Numbers are relative

• Squishy numbers and figures

• Value labels

• Error

Number of cattle deaths attributed to coyotes

Cattle deaths attributed to coyotes

• Cattle deaths attributed to coyotes over 5 years

Cattle deaths attributed to coyotes over 5 years