Answer: 0.7071
Step-by-step explanation:
The first thing to do is to calculate the R² which is the coefficient of determination. This will be:
= 1 - SSE/SS Total
= 1 - 600/1200
= 1 - 0.5
= 0.5
Then, the correlation coefficient will be:
= ✓0.5
= 0.7071