options ls=78;

data cls8;

infile 'class8.txt';

input sn success GRE GPA exercise tv;

run;

proc print data=cls8;

run;

proc gplot data=cls8;

plot success*GRE success*GPA success*exercise success*tv;

title 'Scatterplots for All Variables by Success';

run;

proc corr data=cls8;

var success GRE GPA exercise tv;

title 'Correlations for All Variables';

run;

proc reg data=cls8;

model success=GPA;

var GRE exercise tv;

title 'Regression of Success by GPA';

run;

plot success*GPA pred.*GPA /overlay;

title 'Plot of Success by GPA';

run;

plot r.*GRE;

title 'Plot of model residuals by GRE';

run;

plot r.*exercise;

title 'Plot of model residuals by excersize';

run;

plot r.*tv;

title 'Plot of model residuals by tv';

run;

proc reg data=cls8;

model success=GPA GRE;

var exercise tv;

title 'Regression of Success by GPA and GRE';

run;

plot r.*pred.;

title 'Plot of residuals by predicted';

run;

plot r.*exercise;

title 'Plot of model residuals by excersize';

run;

plot r.*tv;

title 'Plot of model residuals by tv';

run;

quit;