The director of graduate admissions at a local university is analyzing the relationship between scores on the Graduate Record Examination (GRE) and subsequent performance in graduate school, as measured by a student's grade point average (GPA). She uses a sample of 10 students who graduated within the past five years. R-96

a. Calculate and interpret the covariance.

b. Calculate and interpret the coefficient of correlation. Does an applicant's GRE score seem to be a good indicator of subsequent performance in graduate school?

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GRE GPA 1500 3.4 1400 3.5 1000 3.0 1050 2.9 1100 3.0 1250 3.3 800 2.7 850 2.8 950 3.2 1350 3.3