Question
Calculate rank correlation co-efficient from the following table:
|
X |
10 |
12 |
8 |
15 |
20 |
25 |
50 |
|
Y |
15 |
10 |
6 |
25 |
16 |
12 |
8 |
Solution
|
X |
Y |
D (R1–R2) |
D2 |
||
|
10 |
6 |
15 |
3 |
3 |
9 |
|
12 |
5 |
10 |
5 |
0 |
0 |
|
8 |
7 |
6 |
7 |
0 |
0 |
|
15 |
4 |
25 |
1 |
3 |
9 |
|
20 |
3 |
16 |
2 |
1 |
1 |
|
25 |
2 |
12 |
4 |
–2 |
4 |
|
50 |
1 |
8 |
6 |
–5 |
25 |
|
Σ D2 = – 48 |
