Null hypothesis: variable has specified distribution
null_dist(var, dist, params = NULL)variable name
distribution name. One of: beta, cauchy, chi-squared, exponential, f, gamma, geometric, log-normal, lognormal, logistic, negative binomial, normal, poisson, t, weibull
list of parameters of distribution. If NULL, will
use fitdistr to estimate them.
a function that given data generates a null data set.
For use with lineup or rorschach