Based on SAS Programming 1: Essentials training book, the difference between PROC MEANS and PROC SUMMARY are: PROC MEANS: The PRINT option is set by default, displays output Omitting the VAR statement analyzes all the numeric variables PROC SUMMARY: The NOPRINT option is set by default, displays no output Omitting the VAR statement will produce only simple count of observations PROC TABULATE is merely different in usage, more to produce two or more dimensional report(s) ... View more