Find the correlation coefficient, r, of the data described below.
Javier thinks that text messaging is causing him to talk less on the phone. For one month, he examined his text message and call logs with his closest friends.
For each friend, Javier checked the number of text messages he sent to that friend, x, and the number of minutes they spoke on the phone, y.
Text messages sent Minutes on the phone
42 87
51 97
60 92
71 7
93 4
Round your answer to the nearest thousandth.
r=