Statistics: 6.1 Correlation and Coefficient
OSELF EXAMINATION QUESTIONS Page 320 : Question 5
Q.2) Find correlation between age of husband and wife
| Age of husband (X) | Age of wife(Y) |
| 80 | 82 |
| 45 | 56 |
| 55 | 50 |
| 56 | 48 |
| 58 | 60 |
| 60 | 62 |
| 65 | 64 |
| 68 | 65 |
| 70 | 70 |
| Age of husband (X) | Age of wife(Y) | dx=X-62 | dy=y-62 | dxdy | (dx)2 | (dy)2 |
| 80 | 82 | 18 | 20 | 360 | 324 | 400 |
| 45 | 56 | -17 | -6 | 102 | 289 | 36 |
| 55 | 50 | -07 | -12 | 84 | 49 | 144 |
| 56 | 48 | -6 | -14 | 84 | 36 | 196 |
| 58 | 60 | -4 | -2 | 8 | 16 | 4 |
| 60 | 62 | -2 | 0 | 0 | 4 | 0 |
| 65 | 64 | 3 | 2 | 6 | 9 | 4 |
| 68 | 65 | 6 | 3 | 18 | 36 | 9 |
| 70 | 70 | 8 | 8 | 64 | 64 | 65 |
| 557 | 557 | -1 | -1 | 726 | 827 | 857 |
