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Advanced Energy Test Engineer Interview Question

I interviewed in Fort Collins, CO and was asked:
"What is most important in determining the effectiveness and accuracy of a piece of test equipment? The answer they were looking for was:"
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Part of a Test Engineer Interview Review - one of 5 Advanced Energy Interview Reviews

Answers & Comments

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You need to perform a gage r and r experiment with the tester to prove that the variability in the tester itself is much less than the variability in whatever you are measuring. Ex. is if you measure the same part 10 times, how broad is the difference in the 10 readings with respect to the center of the tolerance of the measured part. Google it, its not that complex.
- Interview Candidate on Dec 16, 2009

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