type
select one of the univariate normality tests: SW: Shapiro-Wilk, CVM: Cramer-von Mises, Lillie: Lilliefors (Kolmogorov-Smirnov), SF: Shapiro-Francia, AD: Anderson-Darling
desc
if TRUE, it displays descriptive statistics including mean, standard deviation, median, minimum, maximum, 25th and 75th percentiles, skewness and kurtosis.