FishboneFishbone
Six Sigma Foundations Continuous Improvement TrainingSix Sigma Foundations Continuous Improvement Training
Six Sigma Simplicity
Key Learning PointsKey Learning Points
s First Step is Honing in on the VITAL FEW Causes
s Remember, It is still OPINIONS
s First Step is Honing in on the VITAL FEW Causes
s Remember, It is still OPINIONS
Fishbone - Where Does It Fit?Fishbone - Where Does It Fit?
s Measurement, narrowing projects, combining different people’s perspective of a situation
StatementProblem
People
Machines
Materials
Methods
Measurements
Environment
Search for root cause of specific problem
Fishbone - Why Do We Need It?Fishbone - Why Do We Need It?
s Groups potential causes for defects around common categories
s Involves teams Highlights where additional data
gathering needs to occurs Helps scope a projects Natural follow-on from brainstorming to
either simplify or expand ideas
Fishbone - Who Should Create It?Fishbone - Who Should Create It?
s Any team member should know how to create a Fishbone
s All people who are affected by the process should be involved (even if you have to conduct two sessions and combine results)
s Needs to be kept simple
Fishbone – ExampleFishbone – Example
Fishbone – ExerciseFishbone – Exercise
ProblemStatement
People
Machines
Materials
Methods
Measurements
Environment
Search for root cause of specific problem
Now create a Fishbone in your groups on a Flip chart to show what areas of projects in your experience have failed. i.e. problem statement = ‘Project failure’
Solution Effect - Where Does It Fit?Solution Effect - Where Does It Fit?s Often people have a choice of potential solutions.
A Solution effect diagram is drawn as before excepting a solution
StatementProblem
People
Machines
Materials
Methods
Measurements
Environment
Search for root cause of specific problem
1) ProposedSolution
2) Anticipated effects of solution
Solution & Effect - Why Do We Need It?Solution & Effect - Why Do We Need It?s Identifies weaknesses and side effects of
proposed solutions Involves team s Highlights where additional refinement of
Control plan / management of buy in needs to occur
s Again helps scope a project’s implementation
Zoom in - Force Field DiagramZoom in - Force Field Diagram
s Each branch and sub branch of a Fishbone can be examined to isolate the desired and undesired effects of enabling team to develop a detailed understanding of the influences on project success
C urrent S ta te M ach inery
P roposa l to change photocop ierfor a scanner
Higher speedBetter Quality
Cheaperrunning costs
Existingcontract
Newtechnology
No A2 feed
Untested
Investm entcost
Needs less space
Zoom Out- ScopingZoom Out- Scoping
StatementProblem
People
Machines
Materials
Methods
Measurements
Environment
Search for root cause of specific problem
s Can the team change the environment?
s Should the team consider changing the number of people working in a department
s How much expenditure on equipment is realistic
s Does the customer dictate parts of the process
s Are there areas to avoid
Adding Data/ VotesAdding Data/ Votes
StatementProblem
People
Machines
Materials
Methods
Measurements
Environment
Search for root cause of specific problem
s If you have data e.g. number of failures, cost of failures you can add these to the branches to weight them
s If you want to decide where to start the team’s analysis consider n/3 voting to identify areas of most interest
Procedure for FishboneProcedure for Fishbone1. Agree on problem 2. Draw horizontal line in center of page3. Write problem at fish head4. Draw bones - you may use titles: Manpower,
Machine, Method, Measurement, Management, Mother Nature (Environment) - or choose your own as appropriate
5. Brainstorm/copy ideas onto fishbone6. Create sub branches as appropriate7. Zoom in/ Zoom out as appropriate8. Score / Vote as appropriate to prioritize action9. Switch from Cause - Effect to Solution Effect as
appropriate
FishboneFishbone
Six Sigma Foundations Continuous Improvement TrainingSix Sigma Foundations Continuous Improvement Training