proc univariate

[sanyam13]

Proc Univariate data = sashelp.class ;

class sex ;

var age ;

run;

Proc Univariate is an analysis for 1 variable then how come it is still running for 2 variables? Here sex is qualitative and age is quantitative. why it is not giving any error ? 

[PeterClemmensen]

It does not run for two variables. It runs separate analyses for each level of the variable sex. Since sex has two levels: M and F, you see two separate analyses in your output. 

Similarly, the species variable in sashelp.iris has three levels, so the below code returns tree levels of analysis

proc univariate data = sashelp.iris;
class species;
var sepallength;
run;