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  1. D

    Determine whether the product moment correlation coefficient changes

    https://drive.google.com/open?id=0B-Qk99jFSxW6c2FOTXJsSHkzTjA Can someone please help me with part (e) to determine whether the product moment correlation coefficient increases, decreases or remains the same. Here is what I think. Although the new Syy increases with the addition, we cannot...