adjust_p_value          Adjust p-values for multiple testing
diff_in_means           Calculate difference in means
diff_in_medians         Calculate difference in medians
fisher                  Fisher combining function
liptak                  Liptak combining function
npc                     Run NPC
one_sample              One-sample permutation test
one_sample_mean         Calculate the one-sample problem test statistic
one_way_anova_stat      Calculate one-way anova test statistic
permutation_test        Run permutation test
permutation_test_ci     Construct confidence interval by inverting
                        permutation tests
permute_group           Unstratified group permutation
permute_sign            Sign permutation
strat_permute_group     Stratified group permutation
tippett                 Tippett combining function
ttest_stat              Calculate t-test statistic
two_sample              Two-sample permutation test
