The following steps display information about the data set Sashelp.Gas and create Figure B.5:

 
title 'Exhaust Emissions Data';
proc contents data=sashelp.gas varnum; 
   ods select position; 
run;

title 'The First Five Observations Out of 171';
proc print data=sashelp.gas(obs=5); 
run;

title 'The Fuel Type Variable';
proc freq data=sashelp.gas; 
   tables fuel; 
run;