Without data or output I'm guessing. Generally the first thing I look at for CLASS variables and unexpected Ns are missing. Tabulate will exclude records by default that do not have values for all of the class variables. If this sounds possible try adding the option MISSING: CLASS RV1 RV2 RV3 RV4 RV5 COLV /missing; If that is the case you will a percent missing indicated in the output. ... View more

Suggest you contact the publisher. And why would someone consider compromising the copyright on the sample material include with a book, otherwise? Scott Barry SBBWorks, Inc. Suggested Google advanced search, this post (if only): +"SAS programming 3" +disk +download Message was edited by: sbb ... View more