Microsoft does not know a heckuva lot about presentation design, but one thing they do correctly in PowerPoint is to make available different types of graph so that you can match the graph type to the point youre trying to make with your data. There are twelve different graph types available with PowerPoint 2000, but few of those styles work well in the low-resolution world of computer-based presentations. With few exceptions, here is how you want to use the following types:
Pie Graphs for Share
Bar Graphs for Comparative Amounts
Line Graphs for Trends, Time
Pie Graphs
Pie graphs (commonly misnomered pie charts) are one of the more overused, and hence misused, types of graphs, primarily because they are so easy to make, and easy to make look good. They are misused when chosen to show amounts rather than share. The beauty of pie graphs is that they show so clearly what they are supposed to show, i.e., how much of the whole each element contributes. In most cases the actual amounts in this case percentages are actually secondary to the area of the slices in terms of telling the story.
When you look at a pie graph with five or fewer...
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