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This thread is carried over and continued in the Current Elsmar Cove Forums 
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This thread is carried over and continued in the Current Elsmar Cove Forums
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The New Elsmar Cove Forums
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 The New Elsmar Cove Forums
 Statistical Techniques and 6 Sigma
 Capability Study - Feasible?
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| Author | Topic: Capability Study - Feasible? |
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precabcorp Lurker (<10 Posts) Posts: 1 |
posted 24 February 2000 11:25 AM
   
We often perform capability studies for our customers on dimensions, but now we are faced with a dilema. One of our customers is asking for a capability study on a measurement that is defined as a range on the print. The print says that any measurement between .33 & .80 is good, without defining a target. We have completed the Gage R&R and the XBAR, R charts succesfully. The problem is we don't know how to do a capability study when there is no set target value. Is this possible. IP: Logged |
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Don Winton Forum Contributor Posts: 498 |
posted 27 February 2000 08:17 PM
Sorry Marc, but I have been away for awhile, for reasons you know. My on-line time has also been reduced, but I will still try to help with some topics when I can. Will be back as soon as I can. Anyway, on with the show. As far as capability goes, I would suggest precabcorp download and read the cpk.pdf paper I have written and posted. You can find it at Marc's pdf zone or you can visit the statistical portion of dWizard's lair below. IP: Logged |
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Batman Forum Contributor Posts: 111 |
posted 27 February 2000 10:08 PM
Remember that Cpk or Ppk only cares about how close you are to one tolerance end or the other, not how close you are to the target - that's Cpm. Your tolerance is .33 and .80. What's your capability? IP: Logged |
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