You can also go to Discover Information Assets (Information Catalog) - search for your data table & run the analysis (if it has not already been run).  After the analysis has completed, go to the Column Analysis tab - you get all the summary statistics (& a lot more). ... View more

> How to generate summary statistics such as mean, median, variance, quartiles, etc. for qualitative columns  Did you mean quantitative columns?  A qualitative column (for example, Sex) does not have these statistics.  ... View more