qiime/qiime — pull request #413 by jrrideout (2012-10-22 18:13:48+00:00)
Title: compare_alpha_diversity.py now supports both parametric and nonparametri...

...c two sample t-tests (nonparametric is the default) with the new optional options -t/--test_type and -n/--num_permutations. Also fixed a bug that used the wrong degrees of freedom in the t-tests, yielding incorrect t statistics and p-values. This should resolve issues 237 and 411.