For a given set of 12 ranked data values,the sum of the squared differences is 63.18. What is the test statistic value to test the hypothesis that the rank correlation coefficient is zero?
A)0.221
B)0.673
C)0.779
D)0.327

Question

Quizplus · Accepted Answer

The test statistic for the rank correlation coefficient is calculated using the formula: $ t = \frac{rs \sqrt{n-2}}{\sqrt{1-rs^2}} $, where $ rs $ is the rank correlation coefficient. Given the sum of squared differences, we can calculate $ rs $ and then use it to find the test statistic.

For a Given Set of 12 Ranked Data Values,the Sum