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Analyze Potential Causes

• Use the iterative process to analyze each potential cause.

  • Hypothesis generation: How does the potential cause result in the problem?
  • Design: What type of data can most easily prove/disprove the hypothesis?
  • Preparation: Obtain materials and prepare a check list.
  • Data Collection: Collect the data.
  • Analysis: Use simple, graphical methods to display data.
  • Interpretation: Is the hypothesis true?

• Investigate several potential causes independently.

• Use an action plan to manage the analysis process for each potential cause being studied.

Validate Root Causes

• Clearly state root cause(s) and identify data which suggests a conclusion.

• Verify root cause factors are present in the product and/or process.

• Conduct with / without study to verify root cause. Can you generate the problem?

Analyze Potential Causes - Validate Root Cause

	The. Deming PDCA Cycle	QMS Implementation	FMEA Information	APQP Information
Auditing Information	8-D Problem Solving	Statistics	Error Proofing (Poka Yoke)	Brainstorming
Identifying Waste	Pull Systems	Lead Time Reduction	Planned Maintenance	Quick Setup
Discovering Change	Process Capability - Cp vs. Cpk	Histogram. Animation	Process Loop Animation	Taguchi Loss Function
		Fishbone / Cause and Effects Animation

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