The 5 x Why Method (The 5 Whys)

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The 5 x Why Method (The 5 Whys)
Ger de Waard, SIG Leader
DESCRIPTION OF THE 5 WHY METHOD
The "5 x why" method has been developed by Toyota to perform an iterative Root Cause Analysis of production-related problems. The "5 x why" method is one of the available tools for performing a root-cause analysis. Its simple design and effective output made the 5 x why method also into a popular method used in Kaizen, Lean Production, Six Sigma, Value Stream Analysis, etc.

HOW DOES THE 5 X WHY METHOD WORK?
  • IDENTIFY THE PROBLEM for which the root cause has to be identified.
  • ASK: WHY has this problem arisen? The result is a reply with a new or different problem.
  • KEEP ASKING: WHY? Take the first answer (or problem) and reformulate the question: Where has this issue has arisen? Repeat thes... Register
 

 
Our Endorsement to the 5 WhysSign up
Ashok Kella, Member
Yes, recently, in a complex issue dissecting in ou...
 

 
Better, but not 'root'Sign up
David Week, Member
Five Whys is a great way to get better answers, bu...
 

 
Back to Fundamental ThinkingSign up
Ivan Kohlinsky, Member
Excuse me, but I am asking myself WHY is this meth...
 

   

 
5 Times Why - the Emperor's New ClothesSign up
Wulf-Dieter Krueger, Member
Watch your children asking this question again and...
 

 
Root Cause by Conscious ApproachSign up
srinivas, Member
A rational approach is certainly a way to get clar...
 

 
5 x WHYS is not Enough for MeSign up
David Torres, Member
I took an 8Ds course and the homework was to take...
 

 
I Prefer the Following Name for this Tool: Why-Why AnalysisSign up
Johnny Michael Tan, Member
I want to share that when my Semiconductor manufac...
 

 
Tools According to Problem ComplexitySign up
Rodolfo Dionisi, Member
Remember that the first step to solve a problem (o...
 

 
Role of Biases in Determining the 5 WhysSign up
srinivas, Member
The 5 Whys as a tool is available for long and is ...
 

 
1 WHY is Enough SometimesSign up
Mireille.durin, Member
@Srinivas: Ther...
 

 
5 Why is Excellent Tool to Start and Get Back to the BasicsSign up
Pedro Monteiro, Member
5 Whys is one of the best, simple and effective pr...
 

 
Preparing for Usage of 5 WhysSign up
srinivas, Member
Before we use the 5 Whys is it possible and useful...
 

 
You Can Use 1 Why or 5 Whys or Multiple WhysSign up
VILMA JOY VALLE
Not all people can solve a particular problem with...
 

   

 
Back to Fundamental ThinkingSign up
Dietmar W. Sokowski, Member
@Ivan Kohlinsky...
 

 
A Tip for this Fundamental Why-Why TechniqueSign up
Sudheendra G. Mudikeri, Member
No matter how many WHYs are used, this tool has wi...
 

 
Why? or: What For?Sign up
Olaf de Hemmer, Member
I agree with pointing out that 'root cause' is hel...
 

 
Even a Single 'why' Can Suffice, Without Overtly Asking 'Why'Sign up
C.L. Kappagomtula, Member
Those of you working in production/operations migh...
 

   

 
Find the Most Cost-Effective Solution after 5 WhysSign up
Bevis Qiu, Member
Different solutions can be found through different...
 

   

 
5 Why is not JapaneseSign up
Miguel Sacramento, Member
@Olaf de Hemmer...
 

 
Children Asking WhySign up
Wulf-Dieter Krueger, Member
Children ask why for the same reason as anybody el...
 

 
5 WHY Methodology is AdvancedSign up
FASESIN David, Member
The 5 WHY methodology for problem solving is more ...
 

   

 
Organisation Service or Product Delivery - Human Analogy-Root CauseSign up
srinivas, Member
When we considering an organization as a living be...
 

 
Ask as Many Whys as NecessarySign up
jorge anibal hoyos hoyos, Member
When talking about WHYS I also recall my kids when...
 

 
Conscious ApproachSign up
srinivas, Member
We have expert systems which are currently under d...
 

 
Methods of Iterative Root Cause AnalysisSign up
VILMA JOY VALLE
We have a lot of tools available in the past and a...
 

 
My Important Experience with 5 WhysSign up
Lee, Youngki, Member
I engaged a company in a training meeting with emp...
 

 
Delegation of All Rationally Viable MethodsSign up
srinivas, Member
If all rational methods including why why approach...
 

 
AI and Causes / GoalsSign up
Olaf de Hemmer, Member
@Srinivas: I'd ...
 

 
Feedback Loop MechanismSign up
srinivas, Member
Using semantic web technologies which are based on...
 

 
Stochastic Approach to Root Cause Analysis May Be the Need of the DaySign up
C.L. Kappagomtula, Member
I fully concur with Ger De Waard's argument to not...
 

 
 

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