The first step in a Wilcoxon rank sum test is to combine the data values in the two samples and assign a rank of 1 to which of the following observations?
A) the smallest observation
B) the first observation
C) the largest observation
D) the observation that occurs most frequently

Question

Quizplus · Accepted Answer

The smallest observation should be assigned a rank of 1 regardless of which sample it came from. This is because the Wilcoxon rank sum test ranks all of the observations together and does not consider which sample they came from.

The First Step in a Wilcoxon Rank Sum Test Is