options ls=70 ps=55; run;

data sasuser.density;
input density;
lines;
5.50
5.57
5.42
5.61
5.53
5.47
4.88
5.62
5.63
4.07
5.29
5.34
5.26
5.44
5.46
5.55
5.34
5.30
5.36
5.79
5.75
5.29
5.10
5.86
5.58
5.27
5.85
5.65
5.39
;
run;

Proc means data=sasuser.density;
run;

Proc univariate data=sasuser.density;
run;

Proc reg data=sasuser.density;
 model density = ;
run;