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Tools for the Cause stage
The Quality Toolbook
> Tool Finder > Starting from the project framework > Tools
for the Define stage
Identify |
Define | Problem |
Cause | Solution |
Implement | Review |
Follow-up
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This section identifies tools which may be used in the
Cause stage of the
project framework for the following
activities:
- Identifying possible causes of the problem.
- Selection of key causes to address.
- Determining measures to verify identified key causes.
- Designing experiments to verify key causes.
- Measuring the process to verify that causes are key, as suspected.
- Identifying possible causes of the problem.
Use the
Cause-Effect Diagram to identify possible causes of a known effect.
Use a
Relations Diagram where there are complex relationships.
Use
Failure Mode and Effects Analysis (FMEA) to help find why systems have failed.
- Selection of key causes to address.
Use a
Prioritization Matrix or
Voting to select key causes for further investigation.
Use the
Force-Field Diagram to resolve for-and-against decisions.
- Determining measures to verify identified key causes.
If measures are not clear, use
Brainstorming or
Nominal Group Technique (NGT) to help identify them.
- Designing experiments to verify key causes.
Use a
Scatter Diagram to investigate uncertain relationships.
Use a
Survey or the
Nominal Group Technique (NGT) to gather information from people.
Use
Design of Experiments for deeper investigations.
- Measuring the process to verify that causes are key, as suspected.
Use a
Check Sheet or
Tables to gather numerical data.
Use a
Survey to gather data from groups of people.
Display results in a
Line Graph,
Pareto Chart or
Bar Chart.
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