<P> 5 Whys is an iterative interrogative technique used to explore the cause - and - effect relationships underlying a particular problem . The primary goal of the technique is to determine the root cause of a defect or problem by repeating the question "Why?" Each answer forms the basis of the next question . The "5" in the name derives from an anecdotal observation on the number of iterations needed to resolve the problem . </P> <P> The technique was formally developed by Taiichi Ohno and was used within the Toyota Motor Corporation during the evolution of its manufacturing methodologies . In other companies, it appears in other forms . Under Ricardo Semler, Semco practices "three whys" and broadens the practice to cover goal setting and decision making . </P>

What is the primary purpose of five-why analysis
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