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Six Sigma Tools for Measure
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Measuring Process Performance
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Basic Measurement Concepts
1. Observe first, then measure.
2. Continuous vs. Discrete Measures.
3. Measure for a Reason.
4. A process for Measurement.
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Plan/ Measure Performance
1. Select what to measure.
2. Develop operational definitions.
3. Identify data sources.
4. Prepare a data collection and sampling plan.
5. Implement and refine the measurement process.
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Develop Baseline Measures
1. Calculate baseline sigma levels for
the process as a whole.
2. Calculate final and first-pass yield.
3. Determine “Cost of Poor Quality”
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Collecting Data
1. Measurement Planning Worksheet
2. CTQ Tree
3. Stratification Factors
4. Measurement Assessment Tree
5. Operational Definition Worksheet
6. Process and Population Sampling
Measure Power Tools
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Counting Defects & Calculating Sigma
1. Sigma Calculation Worksheet
2. Proportion Defective & Yield Calculation Instructions
3. Cost of Poor Quality (COPQ) Calculations
Measure Power Tools
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Measure Completion Checklists
1. Measure Checklist
2. Tollgate Preparation Worksheet
Measure Power Tools
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Advanced Sigma Tools
1. Tracking Long-Term Variation
2. Process Shifts
3. Sigma Capability
Measure Power Tools
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Failure #1: The team measures the Wrong Things.
Failure #2: Measurement Systems “Drift”.
Measure Problem Prevention
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Do
1. Balance output with process/ input measures.
2. Stop taking measures that are not needed or useful.
Measure Do’s and Don’ts
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Don’t
1. Try to do too much.
2. Expect the data you collect to confirm
your assumptions.
Measure Do’s and Don’ts