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when toggle format what by license comment
Jun 16, 2014 at 22:17 comment added Dave M I added more detail to my post. I don't think there is a separation issue in the data. The results are about what I'd expect from comparing the descriptive statistics of the the 2 groups.
Jun 16, 2014 at 21:40 history answered Peter Flom CC BY-SA 3.0