Re: Sample Size of GR&R (Gage R&R) on Anova (Nested)
I think the number of sample size depends on the accuracy required and homogeneity of the test sample.
I always recommend that total sample size is more than 40.
If the variation is large , sample size should be enlarged too.
In case the variation is extra large, but high accuracy is required, then Total sample size come to 100 or more.