FISHBONE
DIAGRAM
A fishbone diagram, also
called a cause and effect diagram or Ishikawa diagram, is a visualization tool
for categorizing the potential causes of a problem in order to identify its
root causes.
This tool is used in the
"Analyze" phase of Six Sigma’s DMAIC (define, measure, analyze,
improve, control) approach to problem solving.
BENEFITS:
Some of them are as follows:
- Visual tool
which is very easy to understand and analyze.
- Helps to
identify the root cause of the problem.
- Expose
possible bottlenecks in the process.
- Identify ways
to improve the process.
- Prioritizes
further analysis and helps you take corrective action.
5 WHYS
ANALYSIS
The 5 whys analysis was
originally developed by Sakichi Toyoda, and was used to trace the root cause of
the problems within the manufacturing process of Toyota Motors.
Today, is frequently used
within LEAN Manufacturing, Gemba Kaizen and Six Sigma.
This tool's simplicity
gives it great flexibility and it combines well with other methods and
techniques.
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