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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