Draw a bootstrap sample from X.quanti and a bootstrap sample from X.quali
bootvar(X.quanti = NULL, X.quali = NULL)
a numeric matrix of data, or an object that can be coerced to such a matrix (such as a numeric vector or a data frame with all numeric columns).
a categorical matrix of data, or an object that can be coerced to such a matrix (such as a character vector, a factor or a data frame with all factor columns).