options nodate nonumber ps=54 ls=76; FILENAME website HTTP "http://www.stat.ufl.edu/~winner/data/topqual.dat"; data nascar; infile website; input track $ 1-45 bank 48-50 length 56-59 topspeed 62-68; cbank = bank-19.31; clength = length-1.522; cbank2=cbank**2; clength2=clength**2; cbl=clength*cbank; run; ods PDF file="topqual.pdf"; ods graphics on; proc reg; model topspeed = cbank clength cbl cbank2 clength2; run; proc reg; model topspeed = cbank clength clength2; run; ods graphics off; ods PDF close;