In Reply to Parent Post by findthebird
I think I get it. Not specific GR&R what I need in this case, but 3-W ANOVA, wher I should decide, if the gages and the operators are giving the same results.
Am I right?
Sorry, i just started...
Not sure there is a "right" or "Wrong" here.
I think our numbers didn't line up because we seem to have looked at different data sets.
I used G1, 3 operators, 3 trials
You seem to have used G1, 3 operators, 5 trials (from your post earlier).
The real question is what I asked before...what are you trying to accomplish?
It looks like you are trying to decide if the gage meets adequate criteria for your sorting step...what is the "adequate criteria"? What does the process NEED.
GRR would be appropriate to test the SYSTEM (rounding and all included) for repeatability and reproducibility. Other statistical methods will give different data, but may be just as useful.
Stats help you decide if you're there yet...but you have to define where you're trying to get to. Keep on chuggin...