The following Data gives the result on n = 100 performances of the Olympic decathlon. The measurements taken for each performance were :

1. x1 (100m)

2. x2 (Long jump)

3. x3 ( shot put )

4. x4 ( high jump)

5. x5 (400m)

6. x6 (110m hurdles)

7. x7 (Discus)

8. x8 ( pole Vault)

9. x9 ( Javelin)

10. x10 (1500m)