Students in Mrs. Anderson’s health class are learning about how exercise affects your heart rate. Twelve students ran around the school track for different lengths of time. Then they measured their heart rates in beats per minute. Heart Rate Record
Minutes
Heart Rate
(bpm)
7
121
8
136
7
122
4
96
3
90
6
120
7
118
4
98
2
84
5
110
7
118
8
128

Find the correlation coefficient of the data. Round to the nearest hundredth.