calculate the rank coefficient of correlation from the following data:
x 90, 88,78,78,74,70,65,62
y 18,25,30,30,30,42,38,47

Saksham, follow the link below to refer to a similar question of rank correlation (when ranks are getting repeated). If still you have any doubt, then post us the image of the solution worked so far by you and we will provide you with quired directions.

https://www.meritnation.com/ask-answer/question/find-out-rank-difference-correlation-of-x-and-yx-80-78-75-7/correlation/1720288