When Performing a Rank Correlation Test, One Alternative to Using $r _ { S } = \pm \sqrt { \frac { t ^ { 2 } } { t ^ { 2 } + n - 2 } }$

Multiple Choice

When performing a rank correlation test, one alternative to using the Critical Values of Spearman's Rank Correlation Coefficient table to find critical values is to compute them using this approximation: $r _ { S } = \pm \sqrt { \frac { t ^ { 2 } } { t ^ { 2 } + n - 2 } }$
where $t$ is the $t$ -score from the $t$ Distribution table corresponding $t$ n $- 2$ degrees of freedom. Use this approximation to find critical values of $\mathrm { r } _ { \mathrm { S } }$ for the case where $\mathrm { n } = 11$ and $\alpha = 0.01$ .

A) $\pm 0.735$
B) $\pm 0.411$
C) $\pm 0.685$
D) $\pm 0.726$