When ranking combined data in a Wilcoxon signed rank test, the data that receives a rank of 1 is the
a. lowest value
b. highest value
c. middle value
d. average of the highest and the lowest of values
Question 2
A nonparametric method for determining the differences between two populations based on two matched samples where only preference data is required is the
a. Mann-Whitney-Wilcoxon test
b. Wilcoxon signed-rank test
c. sign test
d. Kruskal-Wallis Test