options ls=80;

data mrku;
input x y;
label x=Size of Minimum deposit y=Number of new accounts;
xsq=x*x;
xcube=x*xsq;
lof=x;
cards;
125 160
100 112
200 124
75 28
150 152
175 156
75 42
175 124
125 150
200 104
100 136
;

proc reg data=mrku;
  model y=x;
output out=jeff r=resid;

proc plot data=jeff;
  plot y*x resid*x;

proc reg data=mrku;
  model y=x xsq; 
  model y=x xsq xcube;

proc glm data=mrku;
 class lof;
  model y=x lof;
run;