Since gamma is a PRE measure, it tells us
a. the improvement in predicting the order of pairs of cases by taking the dependent variable (Y) into account.
b. the improvement in predicting the order of pairs of cases by taking the independent variable (X) into account.
c. how much better off we are by knowing the value of the independent variable.
d. how much is gained by having full knowledge of both scores for each case.
ANSWER: b
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