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Fig. 7.9 Final Spreadsheet for SAT Scores vs. FROSH GPA Regression and the Correlation
Matrix
This means that the best predictor of FROSH GPA is the MATH SCORE with a
correlation of + .77. Adding the other two predictor variables, READING SCORE
and WRITING SCORE, improved the prediction by only 0.03 to 0.80, and was,
therefore, only slightly better in prediction. MATH SCORES are an excellent
predictor of FROSH GPA all by themselves.
If you want to learn more about the correlation matrix, see Levine et al. (2011).
7.5 End-of-Chapter Practice Problems
1. The Graduate Record Examinations (GRE) are a standardized test that is an
admissions requirement for many U.S. graduate schools. The test is intended to
measure general academic preparedness, regardless of specialization field. The
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