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No.746026 ViewReplyOriginalReport
Can anyone explain how normal distribution works? Apparently it has to be symmetrical and also I have heard that a lot of dataare "normally distributed" like weight and test scores.
How can this happen? Doesn't that assume that 50% of all samples are above the mean and 50% are under? I just don't see how any collection of data can be symmetrical in this way unless it's specifically picked to fit into this model.