## Repeatability

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

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?

## Practice Exam question

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.

Visit Measurement System Analysis

Six Sigma / Lean Practice Exam

Templates, Tables, and Calculators

Custom Search

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

SIPOC

Cause & Effect Matrix

FMEA

Multivariate Analysis

Central Limit Theorem

Confidence Intervals

Hypothesis Testing

T Tests

1-Way ANOVA

Chi-Square

Correlation

Regression

Control Plan

Kaizen

MTBF and MTTR

Project Pitfalls

Error Proofing

Z Scores

OEE

Takt Time

Line Balancing

Yield Metrics

Sampling Methods

Data Classification

Practice Exam

... and more