MSA (Measurement System Analysis) on Multi-Phase Measurement System

[Kelly W]

Ah, I had failed to record which side they were on. Updated workbook (with corrected date, too) attached. We don't have any specified tolerance.

 

[Miner]

I did not have time to do a full analysis, but I did get a chance to start it.

Conclusions so far:

• There is no statistical difference between sides of the test chamber
• There is a statistical difference between operators, but it is very small compared to the differences between parts.

I will finish the analysis tomorrow and get back to you.

 

[Miner]

Sorry for the delay. It has been a hectic week.

In my last post I stated the conclusions so far:

• There is no statistical difference between sides of the test chamber
• There is a statistical difference between operators, but it is very small compared to the difference between parts

After verifying that there was no effect due to side of the test chamber, I ran the data through the standard crossed R&R study.

• Total R&R = 8.2%.
  • Repeatability = 7.47%
  • Reproducibility = 3.4% Bob and John were virtually identical, but Kelly had significantly more variation in results, particularly on parts 4, 9 & 11.

I believe that your original concern back at the start of this thread was on whether you could perform an MSA on this measurement system in response to a customer request. The answer is yes, and fortunately for you the results are quite good.