/* x2_2.sas */
/* Purpose:  */

title1 'Example 2.2';

data a;
input x y;
cards;
2 2
5 12
15 4
16 21
16 41
19 14
26 31
24 29
16 31
36 8
39 30
42 44
44 26
40 60
42 34
42 34
50 14
51 41
58 58
64 47
;

proc print data=a;
  var x y;
title2 'List of data.';

proc princomp data=a cov;
  var x y;
title2 'Compute eigenvalues and eigenvectors.';

proc plot data=a;
  plot y*x;
title2 'Plot of data.';

proc corr data=a;
  var x y;
title2 'Correlations.';

proc reg data=a;
  model y=x;
title2 'Regression: y=a*x+b';

proc reg data=a;
  model x=y;
title2 'Regression: x=c*y+d';

run;