![SAS/IML functions that operate on columns of a matrix](https://blogs.sas.com/content/iml/files/2017/02/AdvancedAnalytics-3.png)
A SAS programmer asked for a list of SAS/IML functions that operate on the columns of an n x p matrix and return a 1 x p row vector of results. The functions that behave this way tend to compute univariate descriptive statistics such as the mean, median, standard deviation, and quantiles. The following