The Wilcoxon rank-sum test is a popular nonparametric test for comparing two independent populations (groups). In recent years, there have been renewed attempts in extending the Wilcoxon rank sum test ...

Identifying correlation structure is important to achieving estimation efficiency in analyzing longitudinal data, and is also crucial for drawing valid statistical inference for large-size clustered ...

If your computer is overheating when trying to work with your data, taking days to run a program, or you are running out of space to store your data, consider moving your data processing and storage ...