mod beta; mod binom; mod chisq; mod correl; mod count_and_average; mod covariance; mod devsq; mod exponential; mod fisher; mod gamma; mod gauss; mod geomean; mod hypegeom; mod if_ifs; mod log_normal; mod normal; mod pearson; mod phi; mod poisson; mod rank_eq_avg; mod standard_dev; mod standardize; mod t_dist; mod variance; mod weibull; mod z_test;