Yes of course & this is also why we can even do the correlation analyses we did. But it seems to me many people intuitively assume that normalisation blurs patterns sufficiently to be hard to distinguish - as would probably be true when normalising more basic info (e.g. single-value measures).
Yeah it's not at all like z-scoring. But I've learned that most people have incorrect intuitions about all kinds of operations called "normalization" all over science.
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