mavii

For each score type that you specify, PROC NPAR1WAY computes a one-way ANOVA statistic and also a linear rank statistic for two-sample data. The following score types are used primarily to test for differences in location: Wilcoxon, median, Van der Waerden ...

Interpret the p-value from a signed ranks and Wilcoxon sum of ranks test. List the key strengths and weaknesses of a non-parametric test over a parametric approach.