A model to explain the standardized outcome on a final exam (stndfnl) in terms of percentage of classes attended (antrte), prior college grade point average (priGPA), and university entrance exam (ACT) score is stndfnl Bo+ B,antrte + B₂priGPA+ BapriGPA²+B₁ACT+BACT2+ BapriGPA antrte Using the 680 observations for students in a course, the estimated equations are M Model 1 Model 2 Model 3 intercept antrte priGPA 2.0502 0.2729 0.0296 (1.3603) (0.6239) (0.0379) -0.0067 (0.0102) -1.6285 -1.3436 to scro .
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