Business graphics systems can be used to convert an indigestible set of facts and figures into a graphical form which can be easily assimilated. This may be a freehand sketch or one of a number of formal graph types. Graphics can be used in a report or in presentations. The media for the former will be the printed page or VDU screen, and the media for presentations might include photographic slides and overhead projector transparencies. An overview of business graphics is given in the first section of this chapter, along with a discussion of the special hardware that might be required. Section 5.2 introduces the formal graph types: bar charts, pie charts and line graphs.
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