1.
The ranking of 10 students in two subjects A and B are as follows:
A:
6
5
3
10
2
4
9
7
8
1
B:
3
8
4
9
1
6
10
7
5
2
Calculate rank correlation coefficient.
[Ans. R= +0.78]
Answers
Answer:
answer of question is 110.78
Answer:
Step-by-step explanation:
Rank of correlation
A (x) rx B ry d d²
6 6 3 3 3 9
5 5 8 8 -3 9
3 3 4 4 -1 1
10 10 9 9 1 1
2 2 1 1 1 1
4 4 6 6 -2 4
9 9 10 10 -1 1
7 7 7 7 0 0
8 8 5 5 3 9
1 1 2 2 -1 1
= 36
r = 1 - 6∑ d² / n (n² -1)
r = 1 - 6× 36 / 10 (10² -1)
r = 1 - 216 / 990
r = 0.217171717