(a) How do the variables in a research study that uses the ordinary Pearson r correlation coefficient...

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(a) How do the variables in a research study that uses the ordinary Pearson r correlation coefficient differ from the variables in a study that uses the point-biserial correlation coefficient?

(b) Is the procedure for computing a point-biserial correlation coefficient different from the procedure for computing a Pearson r correlation coefficient? Why or why not?

(c) Is the procedure for testing a Pearson r correlation coefficient for statistical significance different from the procedure for testing a point biserial correlation coefficient for statistical significance? Why or why not?

(d) In what way is the meaning of a squared point-biserial correlation coefficient the same as the meaning of any other squared Pearson r 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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