For this case we have the following values of r:
r = 0.812
r = -0.908
The first thing you should know is that the higher values of r, the higher the correlation.
When the value of r is one, the correlation is perfect.
When the value of r is very close to one, the correlation is good.
Therefore, the value of r with the best correlation is:
r = 0.812
Answer:
r = 0.812
