For the Situation Above, Give a Practical Interpretation Of $r ^ { 2 } = .66$

question 38

Multiple Choice

For the situation above, give a practical interpretation of $r ^ { 2 } = .66$ .

• A) We estimate SALARY to increase \(\$ .66\) for every 1-point increase in GMAT.
• B) We can predict SALARY correctly \(66 \%\) of the time using GMAT in a straight-line model.
• C) We expect to predict SALARY to within \(2 ( \sqrt { .66 } )\) of its true value using GMAT in a straight-line model.
• D) \(66 \%\) of the sample variation in SALARY can be explained by using GMAT in a straight -line model.

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