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  Statistical Techniques and 6 Sigma
  X Bar and R Chart

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Author Topic:   X Bar and R Chart
Marloun
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Posts: 14
From:Philippines
Registered: Feb 2000

posted 26 March 2000 09:25 PM     Click Here to See the Profile for Marloun     Edit/Delete Message   Reply w/Quote
Marc, do you happen to have any files regarding the x-bar and r chart? Thanks.

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Marc Smith
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From:West Chester, OH, USA
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posted 31 March 2000 11:21 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
Not off hand. Are you looking for a spreadsheet, an How to document or what?

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Don Winton
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From:Tullahoma, TN
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posted 31 March 2000 11:57 AM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
There is some SPC stuff *** Dead Link Removed ***here that may be of some help.

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Marloun
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Posts: 14
From:Philippines
Registered: Feb 2000

posted 04 April 2000 06:08 AM     Click Here to See the Profile for Marloun     Edit/Delete Message   Reply w/Quote
Thanks, Don. Actually, I was just looking for more info about this spc method, who invented it, how he was able to come up with such a method. Although it is pretty basic, I find it rather very useful. I am looking for additional files on this method because it is what we use here and I think if I teach this method to operators, they can appreciate the simplicity and the practicality of this method.

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Jim Biz
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Posts: 275
From:ILLINOIS
Registered: Mar 2000

posted 04 April 2000 08:16 AM     Click Here to See the Profile for Jim Biz   Click Here to Email Jim Biz     Edit/Delete Message   Reply w/Quote
If you're just looking for "basics"..
Walter A Shewhart back in the late 20's developed much of the "modern era" use of Spc techniques..Bell Lab's and Demming - helped perfect its use.

Brief historical background can be found at www.asq.org/about/history/shewhart.html

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Don Winton
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Posts: 498
From:Tullahoma, TN
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posted 04 April 2000 11:30 AM     Click Here to See the Profile for Don Winton   Click Here to Email Don Winton     Edit/Delete Message   Reply w/Quote
Any search with the keyword 'Shewhart' will give all kinds of info.

BTW, Grant and Leavenworth give excellent explanations of the Shewart Bowl experiments in their book.

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