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.
-In a regression problem the following pairs of (x,y)are given: (2,1),(2,-1),(2,0),(2,-2)and (2,2).Which of the following is true of the given data?
A)For the given data,the coefficient of correlation is -1.
B)For the given data,the coefficient of correlation is 0.
C)For the given data,the coefficient of correlation is 1.
D)For the given data,the coefficient of correlation is 2.

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. 
-In a regression problem the following pairs of (x,y)are given: (2,1),(2,-1),(2,0),(2,-2)and (2,2).Which of the following is true of the given data?
A)For the given data,the coefficient of correlation is -1. 
B)For the given data,the coefficient of correlation is 0. 
C)For the given data,the coefficient of correlation is 1. 
D)For the given data,the coefficient of correlation is 2.

Quizplus · Accepted Answer

Since all the values of x are the same (2) and there is no clear linear relationship between x and y, the coefficient of correlation is 0.