data fw06p06; title 'CHAPTER 6 EXERCISE 6';
input  AREA $  INDEX;
cards;
  A       2.92
  B       1.84
  A       1.88
  B       0.95
  A       5.35
  B       4.26
  A       3.81
  B       3.18
  A       4.69
  B       3.44
  A       4.86
  B       3.69
  A       5.81
  B       4.95
  A       5.55
  B       4.47