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Affinity Diagram ('KJ' diagram)

A diagram that is used as a method of sorting qualitative data, which usually comes in the form of short phrases or sentences (eg. 'Customers are unhappy with delivery delays'). It is often done with Post-it Notes, although the original method used 3" x 5" cards.

It is a great method of working as a group to sort out issues and fuzzy situations. It is also useful for sorting such as customer comments from surveys. 

Building an Affinity Diagram is often known as 'doing a KJ', after its originator, Kawakita Jiro (this is in order of surname, given name, as in the Japanese tradition). 


See also:

Toolbook chapter: Affinity Diagram

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