New Gauge RnR report
CompletedAs a part of the continues improvements of the WATS product Virinco propose the make a new and better version of the Gauge RnR report. The new report will be implemented as a single report below the Station group in survey (disconnected from the Test step yield & analysis report).
See the attached PDF for details and please leave any comments and feedback below.
Calculation references.
http://elsmar.com/pdf_files/Calibration/GageR&R.pdf
http://www.engineeredsoftware.com/papers/msa_rr.pdf
Specification Gage RnR.pdf
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Official comment
Available in the 2015.3 release: https://virinco.zendesk.com/hc/en-us/articles/207423843-WATS-Server-release-2015-3
Comment actions -
Is it possible to have Number of District Categories calculated as well?
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- Display X/Rbar charts with the control limits
- Add Part*Appraiser interaction chart
- Are there any limitations for the number of repeats/parts/appraisers?
- Possibility to save/export the Gage R&R report with the used filters. I would add this feature also to the other reporting tools (Product Yield, Test Step & Yield Analysis).
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- Is it also possible to have one-way ANOVA analysis (single operator)? In some cases there is only one test station / test fixture in use and the test system is fully automatic. In my opinion human operator doesn't affect to the results of the measurements.
- NDC (Number of District Categories).
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1. Please make graphs more colorful, now if you print these to paper you are not able to see much.
2. Can you add R chart and X-bar chart?
3. Is it necessary always to have three different normal distribution graphs? Could it be so that you can select which graphs you like to see in your report?
4. Part graph could be different type, - now it’s quite difficult see anything useful. Run chart is now more like scatter chart - add line’s between dots?
5. Could title of “By Appraises” graph be “By Appraises (Operators)”
[Tapio Leveelahti]
6. Could all these charts / plots be selectable because users might have a different needs for these graphs?
7. Export whole report to doc format for further report editing.
[Pietu Puura]
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Few proposals:
1. R-chart and X-bar with control limits - These are used in GageR&R to detect if any operator or DUT is dominating the GageR&R result and should be considered to be removed from analyze.
2. Number of Distinct categories - Often used in parallel with GageR&R(tolerance) and useful information when performing root-cause analyze for tested product by control charts etc.
2.a. Study Variation(Part-to-Part) - If low NDC value, Study Variation(part-to-part) helps to detect does GageR&R sample units represent normal production variation for tested parameter.
3. Warning text if there is not enough test data for Annova calculation- Few SPC books defines rule of thumb for minimum data: nro of DUTS times operators should be over 15. And min.3 trials
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Hi All,
Please check out this BETA version of the new WATS Gauge RnR Report.
Browse to http://preview.watssolution.com/wats/ and use test/test as login credentials.
PS: Not all your requirements was implemented at this stage, but we are confident that this version will be a major step-up from the version available in WATS today.
Please leave your comments below. We may also provide the raw data used for calculations upon request.
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