**Repeatability** is the capability of the gage (a.k.a. the measurement system which could be a gage, an appraiser, inspector, or measurer) generating the same exact result every time measuring the same thing more than one time.

*How well does the appraiser repeat their own measurement?*

Perhaps that appraiser get the exact same result but that results if off the true actual value the same amount each time. This indicates that the gage itself has a calibration problem that first needs to be resolved.

**Reproducibility** compares the measurement of one appraiser to other appraiser(s) measuring the same object using the same gage.

The term "*among*" is used when explaining reproducibility since it relays information about the measurements among all the appraisers.

*What is the capability of each appraiser getting the same exact measurement on the same part using the same gage?*

*How well do they reproduce each others' resulting measurements on each part?*

Which of the following devices are examples of attribute measurement devices?

A) Plug gages

B) Calipers

C) Dial indicators

D) Limit length gages

E) Micrometers

Answer: A & D. The others are considered variable measurement devices.

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Six Sigma / Lean Practice Exam

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**Six Sigma**

**Templates, Tables & Calculators**

**Six Sigma** Slides

*Green Belt Program (1,000+ Slides)*

*Basic Statistics*

*Cost of Quality*

*SPC*

*Process Mapping*

*Capability Studies*

*MSA*

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*Cause & Effect Matrix*

*FMEA*

*Multivariate Analysis*

*Central Limit Theorem*

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*Hypothesis Testing*

*T Tests*

*1-Way ANOVA*

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*Correlation *

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*Control Plan*

*Kaizen*

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Z Scores

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*Practice Exam*

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