Given the following data pairs (x, y): (1, 1.24), (2, 5.23), (3, 7.24), (4, 7.60), (5, 9.97), (6, 14.31), (7, 13.99),(8, 14.88), (9, 18.04), (10, 20.70)

1. Find the regression equation *

• y = 0.49 x
• y = 0.490 x - 0.053
• y = 1.98 x + 0.436
• y = 2.04 x

2. Obtain a prediction for x = 4.5. *

• 2.15
• 2.21
• 9.18
• 9.34

3. Calculate the correlation coefficient. *

• r = 0.240
• r = 0.490
• r = 0.985
• r = 0.971

4. The coefficient of determination is strong. *

• True
• False