Gage R&R (Reproducibility and Repeatability) using Minitab 14

M

mani110

#1
Hi,
I m using Minitab 14 for the calculation of Gauge R&R (x bar R method). The data contains 3 decimal places (mm) and I am getting 0 % study varaition for the Reproducibility values.

I used this data with xls it is giving me results which seems fine.

When I used the same data by manually changing the decimal places from 3 to 2 the xls sheet and Minitab both are giving me the same results.

Can any body help :Dme on how to conduct gauge study on Minitab with the data with 3 decimal places.
 
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Miner

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#2
If you can attach your data, we can better help you. I can evaluate your data using Minitab 15.

p.s. I split this off as its own thread as the topic is different from the thread that you attached to.
 
Last edited:

Miner

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Staff member
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#4
I analyzed your data in Minitab 15 using both the Range method and the ANOVA method (attached).

The Mintab result of Repeatability = 0 is correct. Note that Xdiff (cell C65 in your spreadsheet) = 0, so Repeatability = 0. Check your formula in cell C86. I believe you will find an error there.

There is also a significant Operator*Part interaction that is undetectable by the Range method, but is detected by the ANOVA method.
 

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