The Elsmar Cove Business Systems and Standards Discussion Forums Calculating upper and lower confidence interval bounds
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# Calculating upper and lower confidence interval bounds

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Post Number #1
30th November 2004, 06:55 PM
 D.Scott Total Posts: 1,592
Calculating upper and lower confidence interval bounds

A new member sent me the following message but I think they wanted to actually post it. Can anyone help?

1 Hour Ago
angelicaz
Registered User
Colombia
Registration Date: Nov 2004 Posts: 0
Karma:

Confidence interval bounds:MSA

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Can anyone explain me the way of calculating the upper and lower confidence interval bounds described in page 131 of the MSA third edition.

angelicaz

Post Number #2
2nd December 2004, 07:34 AM
 Atul Khandekar Total Posts: 1,457
Well, it appears that angelicaz sent this PM to several members. Welcome to the Cove, angelicaz.

These are basically the "Exact" confidence intervals of a Binomial Distribution. I won't be able to explain the whole statistics behind this here, but you should be able to refer to any good book on basic statistics to find out more about exact confidence intervals.

You will find an on-line calculator for Exact Binomial and Poisson Confidence Intervals at:
http://members.aol.com/johnp71/confint.html
The program code can also be downloaded as an Excel file from this site.

Also, check out the file att-gage.xls at:
Attribute Gage R&R Form - Long Version - AIAG's MSA Manual

Hope this helps.

Last edited by Marc; 13th May 2008 at 09:05 PM. Reason: Put thread title in link.
 Thanks to Atul Khandekar for your informative Post and/or Attachment!

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