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Suppose we have the correlation coefficient for the relationship between two variables, A and B. Determine...

Suppose we have the correlation coefficient for the relationship between two variables, A and B. Determine whether each of the following statement is true or false.
(a) The variables A and B are categorical.
(b) The correlation coefficient tells us whether A or B is the explanatory variable.
(c) If the correlation coefficient is positive, then lower values of variable A tend to correspond to lower values of variable B.
(d) If the correlation between A and B is r = 0.6, then the correlation between B and A is r = −0.6.
(e) The correlation coefficient will be +1.0 if all the data points lie on a perfectly horizontal straight line.

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