using the rank correlation method determine the realtion between debenture price and share price
debenture price 97.8 99.2 98.8 98.3 98.4 96.7 97.1
share price 73.2 85.8 78.9 75.8 77.2 87.2 83.8
Debenture price 
Share price 
R1 
R2 
D=R1R2 
D² 
97.8 
73.2 
3 
1 
2 
4 
99.2 
85.8 
7 
6 
1 
1 
98.8 
78.9 
6 
4 
2 
4 
98.3 
75.8 
4 
2 
2 
4 
98.4 
77.2 
5 
3 
2 
4 
96.7 
87.2 
1 
7 
6 
36 
97.1 
83.8 
2 
5 
3 
9 
N=7 




$\sum _{}^{}{D}^{2}=$62 
${r}_{k}=1\frac{6{\displaystyle \sum _{}}{D}^{2}}{{N}^{3}N}$
$=1\frac{6X62}{{7}^{3}7}=0.07$
There is a negative coefficient of rank correlation to the tune of 0.07.It suggests that debenture price and share price are fairly opposite to each other.