Wilcoxon signed-rank test

Wilcoxon signed-rank test: http://en.wikipedia.org/wiki/Wilcoxon_signed-rank_test

This is the test that is used to determine the statistical significance of the results probably from different methods.

Should refer to the following tool "Significance Testing" maintained by Sebastian Pado:
http://www.nlpado.de/~sebastian/sigf.html

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Cheers,
Vu