All about Cause and Effect Diagram (Fishbone Diagram) - Ishikawa
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Determining the Relevance of a Problem with an Ishikawa Diagram
Leo van Kampen
I use the fishbone to determine the relevance of a problem. On the upper side of the fishbone I put the positive characteristics (what are the benefits if the problem is solved). On the lower side the negative (what are the cost elements). I rate all characteristic on a scale from 1-5. Also sub branches are rated. Then I divide the positive by the negative. If the fraction is larger then 1 the problem is relevant if it smaller then one the subject is not that relevant. Relevance is translated to prioritizing. If there are no negative elements then the denominator is infinite small and the fraction becomes infinite large. Mostly quick wins. If there are no positive characteristics the numerator becomes infinite small and the fractal will be close to zero. No relevance.
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Interesting
Mauricio I am going to try this in my next fishbone... 
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I like it
Pamela The only thing that worries me, is how avoid the subjective rate, I am not sure that I will do it only by numbers, when rating always will be any pref...
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Good Idea
A. J. Jegadheeeson, Member Only doubt I have is we construct the causes and effects diagnosis, based on possible causes. It is like listing out the causes of a road accident by ...
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Special Interest Group Leader
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Cause and Effect Diagram (Fishbone Diagram) - Ishikawa
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