The 5-whys is a method of root cause analysis in which the the learner repeatedly asks, “why?” in order to drill down from higher-level symptoms to the underlying root cause (s) of a problem.
The 5 Whys of Lean work best when performed by a cross-functional team, not completed by one person. The team should include members who know current processes well, and who are willing to focus on facts and data rather than resorting to emotional responses.
How to Get Started with 5 Whys. 1 Form a team. Try to assemble a team of people from different departments. Each representative has to be familiar with the process that is going to be … 2 Define the problem. 3 Ask Why. 4 Take Action.
5 Whys of Lean