topic Re: GLM Duncan test output in Statistical Procedures

GLM Duncan test output

jjjunyi — Tue, 08 Oct 2013 13:58:25 GMT

Hi every one, recently I was doing a GLM with Duncan test, and could some one explain why there is blank row between two records, and there is still a letter in the blank row.

Re: GLM Duncan test output

data_null__ — Tue, 08 Oct 2013 14:14:42 GMT

Those are LINES. You can show the means that are equal with letters or lines GLM uses both where the lines are drawn with the letters. There is even an option for LINES but with DUNCAN I believe it is the default.

proc glm data=sashelp.class;
   class age;
   model weight=age;
   means age / duncan lines; 
   run;

Re: GLM Duncan test output

jjjunyi — Tue, 08 Oct 2013 14:43:59 GMT

This is what I snip from website, but I don't know what the Second B means, that is an empty row, right? No record?

Re: GLM Duncan test output

data_null__ — Tue, 08 Oct 2013 14:47:51 GMT

Imagine the b's are are line connecting the means. Means connected by line(s) are equal.

Re: GLM Duncan test output

jjjunyi — Tue, 08 Oct 2013 15:20:46 GMT

Thanks much! Another question, why there is duplicate dependent variable shown? I thought there should be only one.

Re: GLM Duncan test output

data_null__ — Tue, 08 Oct 2013 15:32:14 GMT

The first word is the variable NAME the second is the variable LABEL. In this case they are the same. You can verify with PROC CONTENTS.

Re: GLM Duncan test output

jjjunyi — Tue, 08 Oct 2013 16:17:04 GMT

Can I disable LABEL?

Re: GLM Duncan test output

data_null__ — Tue, 08 Oct 2013 16:27:18 GMT

There is a system option of the same name. You can remove all the labels from all the variables with

attrib _all_ label=' ';