MiC Quality MiC Quality BI-MONTHLY UPDATE
APRIL 2007  
  Click here for the Web version of the current issue  
Online Course Instructor
Glen Netherwood
MiC Quality

 

Past Issues
February 2007
 
 
 
 

 

 

Topic: Measurement Systems/ Gage R&R

In this issue:

To unsubscribe please use the contact form and select "Unsubscribe from Updates".

:: Specials

Enroll in any 2 courses or packages by the end of May and receive...
$50 discount by quoting DT50
in the Promotional Code field of the enrollment form.

:: Topic: Measurement Systems/ Gage R&R

NOTE: Measurement Systems for both attributes and variables are covered in the MiC Quality course on Measurement Systems Analysis

Measurement Systems Analysis

Measurement systems include variation and error, just like any other process. When a characteristic is measured the readings that are recorded include this measurement error.

It is easy to overlook this and assume that measurements reflect the true value of the characteristic. This can result in fruitless attempts to improve the process when the apparent variation is caused by variations in the measuring system. Measurement Systems Analysis should be an essential precursor to introducing Statistical Process Control, or using Design of Experiments

The variation of the measurement system is generally divided into repeatability error and reproducibility error, hence Gage R&R studies.

Errors that affect the accuracy of the measurement include bias, linearity and stability.

Calibration

The system that establishes the relationship between a measuring device and a traceable reference standard. Calibration may include detecting, correlating, reporting or eliminating discrepancies in the accuracy of the measuring instrument.

Calibration Standard

A standard of known accuracy. The standard should be traceable to the national standard of the country concerned. In the United States that is the National Institute of Standards and Technology (www.nist.gov).

Gage R&R

Gage Repeatability and Reproducibility. The combined effects of measuring systems repeatability and reproducibility:

Linearity

The change in bias over the operating range of a measuring instrument.

Measurement Error

See Measurement Systems Variation.

Measurement Systems Capability

Short term estimate of the Measurement System Variation.

Measurement Systems Variation

See Gage R&R

MSA

See Measurement Systems Analysis

NDC

See Number of Distinct Categories

... continued in the Six Sigma Glossary

See more Measurement Systems definitions in Mic Quality Six Sigma Glossary and study them with examples in our MSA online course.

MIC QUALITY ONLINE COURSES
:: Statistical Process Control (SPC), Advanced Statistical Process Control
:: Design of Experiments (DOE), Advanced Design Of Experiments
:: Primer in Statistics, Advanced Statistics
:: Measurement Systems Analysis (MSA)/ Gage R&R
:: FREE Excel Primer
:: FREE Sample Module "Introduction to Statistics"
:: ALL COURSES
FREE Statistics Reference Booklet
DOWNLOAD Brochure for All Courses


SIX SIGMA TRAINING RESOURCES
:: 

440+ terms Six Sigma Glossary
(includes all terms in the ASQ SSBB Six Sigma Black Belt Body of Knowledge)

::

Sigma Calculator

::

Book Reviews

:: Reference Tables
:: Next Update

Next update will come out in June.

[Top]

 

 

 

 

 

MiC Quality