From the PDF file you posted the link for:     To obtain a copy of an ETS research report, please visit http://www.ets.org/research/contact.html Action Editor: James Carlson Reviewers: Guangming Ling and Lixiong Gu Copyright © 2016 by Educational Testing Service. All rights reserved. ETS, the ETS logo, MEASURING THE POWER OF LEARNING are registered trademarks of Educational Testing Service (ETS). All other trademarks are the property of their respective owners.     ... View more

You almost had the nesting syntax. For that second level of nesting, you need a(b c) instead of a(b(c)).  ... View more

Use PROC RANK to identify top X observations, including ties. I guess you could write DATA step code to do this, but why bother when SAS has already given you the tools to do it very quickly and easily?   proc rank data=have descending ties=low out=want; var x; ranks x_ranked; run; If TIES=LOW isn't what you want, there are other options.     ... View more

Without any knowledge of your data it is hard to make a pointed suggestion.   A default concept when a limit is exceeded is to see if you can change the limit. Since the warning is the M step you might consider increasing the MAXMITER which from the documentation: specifies the maximum number of iterations in the maximization step of the EM algorithm. By default, MAXMITER=1.   I might try setting it to larger values though I wouldn't start with anything very large. Other considerations would be things like the convergence criteria. I do see that the documentation states that the FCONV parameter is not used by the EM algorithm. Perhaps you want to use a different convergence criterion.   You may also want to consider that making a model converge does not mean that the result is actually good model. ... View more

Hello @Rover17,   This kind of error message typically occurs when using a syntax element that is only available in a more recent SAS version or maintenance release. Since the OUTMODEL= option was introduced in SAS/STAT 14.1 (see https://support.sas.com/documentation/onlinedoc/stat/141/whatsnew.pdf, p. 8), I suspect that you are using SAS/STAT 13.2 or older. In this case only a software update could make the option available.   Submit proc product_status; run; and see the log to find out your SAS/STAT version. ... View more

Data.   We can't test code without data.   Does your log have any interesting notes?   Do you have ODS Graphics on? Some of the Proc BOXPLOT features do not work when ODS Graphics is enabled.   ... View more

Have you tried SGPLOT instead? ... View more