Recent content by EatingChickenWings

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    Z Scores - Can I calculate an average on 2 Z-scores or should it be on raw data?

    Hi there, I have a series of Z-scores that are calculated twice for a single subject (they are similar but taken at 2 different times). But because the parameters are from the same subject we need to do an average. Therefore my question is, should I calculate average on a Z-Score or on the...