data countries;
  input lifeexpf birthrate;
  cards;
55	46
55	50
59	48
56	45
68	31
63	45
53	50
79	18
72	28
72	24
68	34
71	20
72	28
82	13
81	13
;
proc reg;
   model lifeexpf = birthrate;
   plot lifeexpf * birthrate;
   run;