5.1. FISHBONE DIAGRAM INSTRUCTIONS
The specific problem of interest is normally the "head" of a fishbone diagram. There are six "bones" on the fish; on these "bones" we list input variables that affect the problem "head."
Each "bone" has a category of input variables that should be listed. Separating the input variables into six categories, each with its own characteristics, helps us make sure that no input variable is missed. The six categories are Measurements, Materials, Men, Methods, Machines, and Environment. (Some people remember these as the five M's and one E.) The six categories are what make the fishbone diagram more effective than just simply listing the input variables.
Ideally, the input variables on a fishbone should come from ...
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