Question

What statistic tells you the strength and direction of the relationships between predictors and a criterion...

What statistic tells you the strength and direction of the relationships between predictors and a criterion variable in a multiple regression, and allows you to directly compare the influence of different predictors to one another?

a. beta

b. kappa

c. t-test

d. r

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Answer #1

d. r

The Pearson correlation coefficient r, can take a range of values from +1 to -1. A value of 0 indicates that there is no association between the two variables. A value greater than 0 indicates a positive association; that is, as the value of one variable increases, so does the value of the other variable. A value less than 0 indicates a negative association; that is, as the value of one variable increases, the value of the other variable decreases. This is shown in the diagram below:

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