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Old May 30, 2013, 11:21 AM   #7
Brian Pfleuger
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Join Date: June 25, 2008
Location: Central, Southern NY, USA
Posts: 17,461
Measuring Groups

None.

That's what it does, measures groups. It just does it very accurately if you enter the data correctly.

It has other info about the group too, besides just size. Standard Deviation and some other things, I think. Mainly, it's a good, consistent way to measure groups.
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