Why why analysis

Why why is very important and use world wide nowadays due to its importance and easyness. It is simplest type of analysis techniques with which we can resolve the issues from simple problems to chronic problems by following easy steps.

Firstly why-why analysis was started and used by Toyota in TPS Toyota production systems later on the passage of time and application it is used by other organisations and in today world used for solving and identifying root cause of their chronic issues.

IATF 16949 is also recommend for using of Why why analysis to solve problems as mentioned in clause 10.2.3.

Today we are going to discuss on this topic because of its importance. Topic we will cover below mentioned contents one by one.

Content table

  • Why whys introduction:
  • Origins of the Why Whys Technique
  • What is Lean methodology?
  • Why why analysis and Lean:
  • Toyota Production System
  • Why why analysis & Toyota Production System
  • How to start why-why analysis-
  • Team formation for why-why analysis-
  • Define the problem for why-why analysis:
  • Start why why analysis:
  • It time take action:
  • When to Stop ask why why
  • Cautions for Why why analysis:
  • When to Use a 5 Whys Analysis
  • Difference between other analysis and why why analysis-
  • Sequence for asking questioning in Why Why analysis-
  • The Advantages of using Why-Why analysis

Let’s discuss above mentioned contents one by one in brief.

Why why analysis introduction:

It is a technique to find out root cause for the problem. It is not complete itself but it’s a portion of analysis methodology. Why why analysis

Just like we can say that it is Heart of a problem solving methodology because this step comes mid of any problem solving method. So it’s vital to do why-why analysis carefully with focus.

It is a technique to find out root cause for the problem. It is not complete itself but it’s a portion of analysis methodology. Why why analysis.

Why why analysis play vital role in decision making and to identify the real cause of problem which may be technical etc.

Its worldwide acceptability methodology for analysis.

Origins of the 5 Whys Technique:

The term Why Why was introduced by Sakichi Toyoda, founder of Toyota Industries & inventor, Developed in 1930s. The popularity of Why why analysis was comes in light during 1970 and it is used worldwide by many organization to solve the problem.

The method is very simple to use with teams by asking why why until reach on real cause.

Why why analysis
Why why analysis

What is Lean methodology?

It is defined as a methodology used to improve the process with use of tools and techniques. It is used in manufacturing or service industries to improve the process.

Lean manufacturing is a methodology which focuses on waste minimization in manufacturing systems and to maximize productivity.

The waste which we taking is that for which customer is not willing to pay or that don’t add value in our business.

This is used worldwide, it is focus on mainly 8 types of waste. Which is abbreviated as DOWNTIME.

This approach is familiar with Toyota Production system which also focus on waste reduction.

Lean is based on some principle namely kaizen, continuous improvement.

This is focus on organization to understand the cost which customer is not willing to pay but which his present in manufacturing system. So Lean helps to identify and eliminate this cost and relevant causes so that organization can build profit and world class quality product for customer.

In today world it is necessary for organization to review their processes and take initiatives to improve them and convert losses into profits.

In current scenario organization are not using only lean but also use it with Six sigma. Six sigma is focus on reduction of process variation and Lean is focus on speed of manufacturing system. When these both are used jointly it helps to build a process with minimal process variation and high productivity.

Why why analysis and Lean:

Lean and Why Why analysis are both having relation because Why why is also utilize to solve the problem identified for improvement and analysis is carried out with why why approach. Because the root cause analysis is common in Lean to reach on decision and identify the actions for improvement.

Toyota Production System :

TPS is a production system which is created based on the philosophy of achieving ultimate quality level by elimination of all waste in existing system.

Why why analysis & Toyota Production System:

TPS is developed by Sakichi Toyoda in Toyota, a Japanese inventor and industrialist, the technique named TPS became an integral part of the Lean philosophy which is accepted worldwide. The Why- Why is also a part of TPS because the basic concept of TPS is to do why why for identify the root cause?

One of the key step to achieve goals it to make effective decision which is led by effective analysis. So if we are not dong analysis is effectively we can’t achieve our defined goals.

It means we have to make decision only on proper analysis

So that why why analysis play vital role in decision making and to identify the real cause of problem which may be technical etc.

How to start why-why analysis-

We know Why-why analysis play vital role in decision making.

It is a technique to find out root cause for the problem. It is not complete itself but it’s a portion of analysis methodology. Why why analysis

so when we going to start why why analysis we have to comply follow key steps to effectively implementation of Why-Why analysis.

Why why analysis
Why why analysis


Team formation for why-why analysis-

Select technically sound people from different different process basis on that hey are at expert level in their respected area.

This expertise of the people gives valuable inputs for analysis. Because why why analysis is not an individual activity it is joint activity.

Define the problem for why-why analysis:

In this discuss the issue with team formed to make a clear statement of problem so that it can resolve effectively.

Because it’s very important to defined the problem first because there is a quote that if we define problem effectively we resolve the problem 50%. So its show the vitality of problem definition.

This step play important roles in analysis methodology because without define problem clearly it is difficult to proceed for analysis.


Start why why analysis:

After defining the probe not it’s time to ask why why to team formed. And the answer of team to be recorded and cross verified with actual fact and data. Because to reach root cause it’s necessary to do analysis with facts and data not on the perceptions.

Asking why why need to keep continue until not reached on real root cause.

Why why analysis

It time take action:

After reaching on real root cause, its time decide action for control over problem. Take feedback from team on action decide and assign responsibility to implement these action in respective areas to prevent recurring problems.

After certain duration start monitoring effectiveness of action decided. And do horizontal deployment of actions based on status.

It is very important to decide effective action with respect to identified root causes. And cause should be validated for identifying the actions. Cause should be validated with cause and effects. We have to check that if  cause is present and affects should be there. And if cause is absent then effect must be absent there because if there is no any relation between cause and effects than it is totally wastage to decide actions against root causes. identified action should be discussed with CFT prior to finalization so that the cross linkage of actions can be checked.

When to Stop ask why why:

As we know in this methodology leader ask why why which can be no longer as long he wants but that Detroit the purpose of why why analysis.

So leader have to know when he has to stop asking why why to team.s

Team has to stop doing why why analysis when they feel that this is the actual root cause for problem and based on that good if they are able to simulate presence of cause versus effect so that they can stop asking why why analysis and start work on identified cause.

Leader have to stop when observed that a valuable root cause is reached and there is no need to proceed further.

In case of multiple root causes leader need to use cause and effects matrix to eliminate unrelated causes.

What is this A3 report?

This is the first thing which is very important to know that what is A3 before proceeding to next step related to how to fill A3.

A3 is basically a problem solving methodology to solve the any problem and guide to move towards the improvement.

The term A3 was originated from Toyota by a lean manufacturing practitioners, basically it helps to diagnoses the situation so that we can focus on your problems and not just on its symptoms.

Let us understand more clear about “what is A3 “and how easily we can make an A3 report

Cautions for Why why analysis:

It’s very important to keep questions in mind using why why methodology. Because as usual when we are doing something at that time we have to keep in mind what we no need to do which causes adverse effect of that particular task for activity

  • Stop asking why why after reach on real root cause
  • Don’t ask too many why why
  • Avoid irrespective answers during asking why why
  • Avoid conflicts during asking why why analysis
  • Validate if there is more than one root cause
  • Cross check with cause effect matrix to eliminate multiple root causes

When to Use a 5 Whys Analysis :

We can use why why analysis to resolve any kind of problem but it will worthy if we use it as per complexity of problems so that the time consuming to use it in normal problem can be avoid.

We have to use why why analysis when we have a problem which is not easy to solve with normal analysis methodology and this problem complexities it means it is critical to solve with the help of normal analysis then we have to go for why why analysis the help of CFT members.

No need to do analysis with why why analysis methodology for each and every problems without identifying or understanding the complexity of the problems.

Because it is totally wastage of time if we use Why why analysis to find out solution for each and every problems solution.

Difference between other analysis and why why analysis

The major difference between other analysis and why why analysis-

If we discuss about difference between other analysis technique and Why-Why is are mentioned below:

  • It can use in complex problems
  • It is easy to do
  • No much more complexity to conduct Why-Why analysis
  • It help to drill down to the root cause of a problem
  • It open ways to find multiple root causes if available.
  • It start with ask simple Why no any tough strategy required.
  • It can use in any section such that problem solving, continual improvement. Target setting etc.

Sequence for asking questioning in Why Why analysis-

When start why why analysis the leader need to keep in mind the proper sequence of question difficulty level. If leader not follow the defined sequence that than probability of analysis deviate from track are more.

Below is defined sequence of questioning in Why- why analysis-

  • Simple problem questions
  • Moderately Problem questions
  • Difficult problems question

The Advantages of using Why-Why analysis:

  • It helps to identify root cause of problem
  • It is easy to conduct analysis with this approach
  • It help to determine relation of root cause with problem
  • It makes analysis process simply
  • Real time validation of root cause Benefits of Five Use world-wide for analysis
  • Trust worthy analysis technique

Thanks for reading the topic on why why analysis hope you like this topic and its add really.

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