Saved Bookmarks
| 1. |
Find out coefficient of rank correlation between X and Y |
Answer» Solution : Here NUMBERS 30,50 and 70 are REPEATED twice in series Y. Therefore, m=2 in Y. `r_(k)=1-(6[SUMD^(2)+(1)/(12)(m_(1)^(3)-m_(1))+(1)/(12)(m_(2)^(3)-m_(2))+(1)/(12)(m_(3)^(3)-m_(3))])/(N^(3)-N)` `=1-(6[19.5+(1)/(12)(2^(3)-2)+(1)/(12)(2^(3)-2)+(1)/(12)(2^(3)-2)])/((8)^(3)-8)` `=1-(6[19.5+(1)/(12)(6)+(1)/(12)(6)+(1)/(12)(6)])/(512-8)` `=1-(6[19.5+0.5+0.5+0.5+])/(504)` `=1-(6[21])/(504)=1-(126)/(504)` `=1-0.25=0.75` Coefficient of Rank Correlation `(r_(k))=0.75`. |
|