I did forget one thing.......in the links pages, under the downloads link, is the link to the ISO/IEC 17025 compliant uncertainty calculator. It may also help you out.
I will take a few liberties since I do not have the document you reference.....but since you put GR&R in the subject, and the question is in the Metrology forum, I presume you are actually trying to get your measurement uncertainty. If I am incorrect, please let me know.
Measurment uncertainty is calculated like this:
Take your readings, get your standard deviation from the average for each reading. This is Type A uncertainty, and works for 30 or 20.
Type B uncertainty can get a bit tricky, I suggest looking at the GUM (in the U.S., ANSI/NCSL Z540-2-1997) for the best way to quantify Type B.
Square the uncertainty numbers (standard deviations for Type A), add them, then take square root. This gives k=1 or roughly 67%. Multiply times two to approximate 95%.
Now, your question was tailored more to the automotive arena. I realize my answer may not have fully answered the question, so you may get a better answer than I have given by going to either the QS9000 forum or the SPC forum.
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hershal 10/15/2002
I did forget one thing.......in the links pages, under the downloads link, is the link to the ISO/IEC 17025 compliant uncertainty calculator. It may also help you out.
Hershal
hershal 10/15/2002
I will take a few liberties since I do not have the document you reference.....but since you put GR&R in the subject, and the question is in the Metrology forum, I presume you are actually trying to get your measurement uncertainty. If I am incorrect, please let me know.
Measurment uncertainty is calculated like this:
Take your readings, get your standard deviation from the average for each reading. This is Type A uncertainty, and works for 30 or 20.
Type B uncertainty can get a bit tricky, I suggest looking at the GUM (in the U.S., ANSI/NCSL Z540-2-1997) for the best way to quantify Type B.
Square the uncertainty numbers (standard deviations for Type A), add them, then take square root. This gives k=1 or roughly 67%. Multiply times two to approximate 95%.
Now, your question was tailored more to the automotive arena. I realize my answer may not have fully answered the question, so you may get a better answer than I have given by going to either the QS9000 forum or the SPC forum.
Hope this helps.
Hershal