An example of polynomial regression using proc reg in SAS.

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The motorcycle data are here. I have created a data set using import wizard called MCycle with two variables: times = time after impact and accel = acceleration of the rider's head. Submit the following code in the editor window to perform linear, quadratic, and cubic regressions.


data Mcycle;
set Mcycle;
TIMES2=TIMES*TIMES;
TIMES3=TIMES2*TIMES;
run;

proc reg data=Mcycle;
title "Linear fit";
model ACCEL = TIMES;
run;

proc reg data=Mcycle;
title "Quadratic fit";
model ACCEL = TIMES TIMES2;
run;


proc reg data=Mcycle;
title "Cubic fit";
model ACCEL = TIMES TIMES2 TIMES3;
linear: test TIMES2, TIMES3;
quadratic: test TIMES3;
run;