Quote:
Originally posted by Milu
No real need for sub-groups.
What you're looking at is the process, using sub groups may add a little accuracy but in real terms I doubt it.
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That's what I thought, but when the program I was using would NOT chart a simple group of 30 parts I started to wonder. What it would do is find the mean of those 30 and chart it as a single point, which does me no good.