When using the Wilcoxon signed rank test and the absolute difference for a pair of observations is zero,it is best to _________________.

A) assign the absolute difference for the pair a value of 0.1
B) drop the pair from the study
C) assign the absolute difference for the pair any random value
D) None of the above

Question

Evelyn Martinez · Accepted Answer

Final Answer : B, Explanation :  When the absolute difference for a pair of observations is zero, it means that there is no difference between the two observations. Including such pairs in the analysis could lead to incorrect results as they do not contribute any information. Therefore, it is best to drop these pairs from the study rather than assigning any random value or adding a small value to the absolute difference.

Definitions

Learning Objectives

Learning Objectives

Related questions