as given in the qus, we need to calculate coefficient of correlation....but in the given one....i need to calculate rank correlation...plz ans this one through rank correlation of coefficient..
Dear Student,
Rank Corelation = 1 - (6ΣD2) / N3 - N
= 1 - (6 x 54) / (83 - 8)
= 1 - 324/504
= 0.357 (aprox)
Regards
X | Rank 1 | Y | Rank 2 | D = (R1-R2) | D2 |
78 | 4 | 125 | 4 | 0 | 0 |
89 | 2 | 137 | 3 | -1 | 1 |
97 | 1 | 156 | 1 | 0 | 0 |
69 | 5 | 112 | 6 | -1 | 1 |
59 | 8 | 107 | 7 | 1 | 1 |
79 | 3 | 106 | 8 | -5 | 25 |
68 | 6 | 123 | 5 | 1 | 1 |
61 | 7 | 138 | 2 | 5 | 25 |
Total | 54 |
Rank Corelation = 1 - (6ΣD2) / N3 - N
= 1 - (6 x 54) / (83 - 8)
= 1 - 324/504
= 0.357 (aprox)
Regards