Statistical Tests: Dependent and Independent

Prof. Mary Ferrill clarifies the differences between the parametric and nonparametric tests, which are also called distribution-free tests.

T tests are very limited in clinical trials. In addition, we can learn the classification of the statistical tests by the table showed in this video.

Also, we should notice that Wilcoxon rank-sum is for independent, and Wilcoxon signed-rank is for dependent studies.

Finally, we have to look for all of the data points in the example.

We have to look in three different places: the baseline table, the outcomes tables, and the adverse reaction tables. Thus, we are able to locate all the different data points to ensure that there are statistical tests to cover each one of those.

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