Q.2 The folowing table contains ACT scores and the GPA scores (grade point average) for eight college students. Grade po

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Q 2 The Folowing Table Contains Act Scores And The Gpa Scores Grade Point Average For Eight College Students Grade Po 1 (71.53 KiB) Viewed 57 times

Q.2 The folowing table contains ACT scores and the GPA scores (grade point average) for eight college students. Grade point average is based on four point-scale student GPA ACT 1 2,8 21 2 3,4 24 3 26 4 27 5 29 6 25 7 2,7 25 8 3,7 30 a) Estimate the relationship between GPA and ACT using OLS, that is obtain the intercept and slope parameters? b) Comments on the directional of a relationship. Does the intercept have a useful interpretation here? c) Compute residuals for each observation and verify that the residuals approximately sum to zero. d) How much of the variations in GPA is expained by ACT scores? e) Calculate the unbiased estimator o², i.e. ², for the regression estimated in (b). 3 3,5 3,6 3