options ls=85 ps=55;

title 'SAS Factor Analysis Example 2';

data stock;

infile 'D:\T8-4.DAT';

input AlliedChemical Dupont UnionCarbide Exxon Texaco;

run;

proc print data=stock;

run;

proc factor method=prin res scree;

title2 'Principal Component Method';

run;

proc factor method=prin n=2 res scree;

title2 'Principal Component Method nfactor=2';

run;

proc factor method=prin n=3 res scree;

title2 'Principal Component Method nfactor=3';

run;