June 24, 2005 at 5:19 pm #39821
I found this ‘rule of thumb’ on one web site. Yet on another it said the rule of thumb was 15%….is there a true rule of thumb? If so, what is it?
“The rule of thumb for acceptance of a measurement system is a total Gage R&R of 30% or less of the lessor of Total Variation or the Specification Tolerance. “0June 24, 2005 at 6:00 pm #122150
BBMoleParticipant@BBMole Include @BBMole in your post and this person will
be notified via email.
30% is a rule of thumb as acceptable, in most cases. 10% is used to indicate an excellent measurement system. It depends what you are looking to do. If you can live with 30% why spend extra cost to reduce the variation. Six sigma as always is a balance against the cost of getting to the desired quality level.0June 24, 2005 at 6:34 pm #122153
I use the JMP software and in their help menu they give the following values. Hope this gives you another perspective.
< 10% excellent
11% to 20% adequate
21% to 30% marginally acceptable
> 30% unacceptable.0
The forum ‘General’ is closed to new topics and replies.