The Psychology of Quality and More

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Point graphs

The Quality Toolbook > Tools for Applications > Tool types > Point graphs

Description | Examples


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Numeric information lends itself well to visual representation in graphs and chart. These convert what can be a mass of unintelligible numbers into a form which clearly convey important attributes of the problem.


Point graphs generally plot pairs of measurements in a two-dimensional 'traditional' x-y format, as in the figure below. Lines may be added to show the sequence of measurement, overall trends or significant boundaries.

Decision areas are typically highlighted by the way points form groups, change across a sequence of measurements, or cross significant boundaries.



Fig. 1. Point graph




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