THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A professor of statistics is interested in studying the relationship between the number of hours graduate students spent studying for his comprehensive final exam and the exam score.The results of the regression analysis of hours studied on exam scores are presented below.
-If the least squares regression line = -2.88 + 1.77x and the coefficient of determination is 0.81,the coefficient of correlation is:
A)-0.88
B)+0.88
C)+0.90
D)-0.90

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A professor of statistics is interested in studying the relationship between the number of hours graduate students spent studying for his comprehensive final exam and the exam score.The results of the regression analysis of hours studied on exam scores are presented below. 
-If the least squares regression line  = -2.88 + 1.77x and the coefficient of determination is 0.81,the coefficient of correlation is:
A)-0.88 
B)+0.88 
C)+0.90 
D)-0.90

Quizplus · Accepted Answer

The Answer of THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A professor of statistics is interested in studying the relationship between the number of hours graduate students spent studying for his comprehensive final exam and the exam score.The results of the regression analysis of hours studied on exam scores are presented below. 
-If the least squares regression line  = -2.88 + 1.77x and the coefficient of determination is 0.81,the coefficient of correlation is:
A)-0.88 
B)+0.88 
C)+0.90 
D)-0.90