Suppose That Six Different E-Readers Were Evaluated by Two Senior

Suppose that six different e-readers were evaluated by two senior citizen
Consumer groups with respect to their suitability for use among the older segment of the
Population. The rankings from 1 (best) to 6 (worst) are shown below. What
Nonparametric method should be used to determine the association between these
Rankings? $$\begin{array} { | c | c | c | } \hline \text { Model } & \text { Group 1 } & \text { Group 2 } \\\hline \text { Kindle 3 } & 1 & 1 \\\hline \text { Sony Reader } & 2 & 3 \\\hline \text { Kindle DX } & 3 & 2 \\\hline \text { Alex } & 4 & 6 \\\hline \text { Kobo eReader } & 5 & 4 \\\hline \text { COOL-ER } & 6 & 5 \\\hline\end{array}$$

A) Spearman's rho
B) Pearson's rho
C) Wilcoxon Signed-Rank test
D) Mann-Whitney test
E) Wilcoxon's rho