scipy/scipy — pull request #338 by chris1869 (2012-10-13 06:22:38+00:00)
Title: Revision of wilcoxon signed rank test according to bug report 1744.

Wilcoxon signed rank test does not comply with MASS R package for a dataset from a textbook example. (resulting in nan- values) Added include_zeros flag for including zero-differences into the calculation according to textbook.
Added a test function in test_morestats.py to check if the calculations are alright.