Ten students in a tutor program at Carleton University were randomly selected.Their grade point averages (GPAs)when they entered the program were less than 9.5.The following data were obtained regarding their GPAs on entering the program versus their current GPAs.
A) = 0.711 + 0.346E
B) = 0.873 + 0.627E
C) = 2.51 + 0.529E
D) = 1.54 + 0.8566E
E) = 0.0065 + 0.879E

Question

Ten students in a tutor program at Carleton University were randomly selected.Their grade point averages (GPAs)when they entered the program were less than 9.5.The following data were obtained regarding their GPAs on entering the program versus their current GPAs. 
A) = 0.711 + 0.346E 
B) = 0.873 + 0.627E 
C) = 2.51 + 0.529E 
D) = 1.54 + 0.8566E 
E) = 0.0065 + 0.879E

Quizplus · Accepted Answer

Based on the given data and regression equations, D has the highest correlation coefficient (0.8566) between the initial GPA and current GPA, indicating a strong positive relationship. In addition, the intercept (1.54) and slope (0.8566) values are reasonable and meaningful for GPAs. Therefore, D is the best choice for predicting current GPAs based on initial GPAs.

Ten Students in a Tutor Program at Carleton University Were