0cc94f64_Top_25_Lean_Tools__How_Does_It_Help_
[Lean Tool] Root Cause Analysis [What Is It?] A problem solving methodology that focuses on resolving the underlying problem instead of applying quick fixes that only treat immediate symptoms of the problem. A common approach is to ask why five times – each time moving a step closer to discovering the true underlying problem. [How Does It Help?] 
Helps to ensure that a problem is truly eliminated by applying corrective action to the “root cause” of the problem.
Top 25 Lean Tools
How Does It Help?