When using the Pearson r correlation coefficient (and virtually all other statistical procedures), it is important to

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When using the Pearson r correlation coefficient (and virtually all other statistical procedures), it is important to pay attention to the sign of a coefficient (plus or minus). Why, then, do we ignore the sign when interpreting a point-biserial correlation coefficient?

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Introductory Statistics For The Behavioral Sciences

ISBN: 9780470907764

7th Edition

Authors: Joan Welkowitz, Barry H. Cohen, R. Brooke Lea

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