232 Quality Assurance
A good starting point—once you have determined the data—for a thor-
ough MSA is
• Before you
• Make adjustments
• Implement solutions
• Run an experiment
• Perform a complex statistical analysis
• You should
• Validate your measurement system or measurement process
(preferably use the ANOVA method)
• Validate data and data collection systems; always remember that
variation may be in any of the following individually or in com-
bination: machine, method, material, measurement, environ-
ment, and manpower (people)
So, what is an MSA? Specically, one can say that MSA is
• A scientic and objective method of analyzing the validity of a mea-
surement system
• A tool that quanties
• Repeatability; sometimes called equipment v