xy
31.4-1412.5
57.91748.6
55.6-599.9
70.3-1710.4
46.52146.8
4925.8
42.41115.2
51.9-616.7
57.5355.9
57.7-1768.1
50-464.4
55.9-728.6
34.2-183.6
55.8-1095.8
187-13512.8


Use your graphing calculator to determine the correlation coefficient for this data set. Round your answer to the nearest thousandth.

r=\displaystyle {r}=