Question

Calculate the correlation co-efficient between X and Y and comment on their relationship.

| X | 1 | 3 | 4 | 5 | 7 | 8 |
| Y | 2 | 6 | 8 | 10 | 14 | 16 |

Answer 1

| X | R1 | Y | R2 | D(R1 - R2) | D2 |
| 134578 | 654321 | 268101416 | 654321 | 000000 | 000000 |
| | | | | | ∑D2 = 0 |