options ls=78;

data class3;

infile 'class3.txt';

input sn stress anx dep;

lanx = log(anx);

sqstress = sqrt(stress);

depsq = dep**(2);

run;

proc print data=class3;

run;

proc univariate data=class3 plot normal;

var stress sqstress anx lanx dep depsq;

title 'name, univar normal';

run;

proc chart data=class3;

vbar stress sqstress/ levels=15;

title 'name, histograms of stress';

run;

proc chart data=class3;

vbar anx lanx / levels=15;

title 'name, histograms of anx';

run;

proc chart data=class3;

vbar dep depsq/ levels=15;

title 'name, histograms of dep';

run;

quit;