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Getting to the Bottom of Your Problem: How to Use the 5 Whys
It is one of the simplest tools in your problem-solving toolbox ... a look at a slightly more humorous example modified from ...
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Root Cause Analysis: Integrating Ishikawa Diagrams and the 5 Whys
Once a problem-solving team has been formed ... The Ishikawa diagram should be expanded each time 5 Whys is used. For example, the branch may end up as material → part not installed → employee ...