Dr Armstrong thinks that a students final grade is related t

Dr. Armstrong thinks that a student\'s final grade is related to his/her number of absences. She took a sample of 9 students and found their number of absences and their final grades. Number of absences x 0 1 2 2 3 3 4 5 6 Final grade y 96 91 78 83 75 62 70 68 56 The correlation coefficient is .912. True or False

Solution

Using technology, we get the correlation,          
          
r =    -0.911867841 = -0.912

So, although it was close, IT HAS TO BE NEGATIVE.

Hence,   FALSE. [ANSWER]