data fw05p01; title 'Chapter 5, Exercise 1';
input  CLASS $  SCORE  ;
cards;
  A        74
  A        97
  A        79
  A        88
  A        78
  A        93
  A        76
  A        75
  A        82
  A        86
  A       100
  A        94
  B        78
  B        92
  B        94
  B        78
  B        71
  B        85
  B        70
  B        79
  B        76
  B        93
  B        82
  B        69
  B        84