data fw05p03; title 'CHAPTER 5, EXERCISE 3';
input   AREA $  INDEX ;
cards;
  A       2.92
  A       1.88
  A       5.35
  A       3.81
  A       4.69
  A       4.86
  A       5.81
  A       5.55
  B       1.84
  B       0.95
  B       4.26
  B       3.18
  B       3.44
  B       3.69
  B       4.95
  B       4.47