Solve this:

Dear student, 
The rank correlation coefficient is calculated as follows:
 

X	Y	R1	R2	D	D2
10	2	5	1	4	16
8	4	3	2	1	1
6	8	2	4	-2	4
9	10	4	5	-1	1
2	6	1	3	-2	4
					26

$$\begin{gathered} R = 1- \frac{6\sum _{d^2}}{N^3-N} \\ =1-\frac{6\times 26}{5^3-5}=-0.3 \end{gathered}$$