* Gasoline Impurity Data 1(for days 1-25:impone, 26-31:imptwo, 32-55:impthree);

data impure;

 label day = 'Days of Production'

    impure = 'Percentage of Impurity of Gasoline in the Tank';



day    impure

-------------

  1     2.33

  2     1.90

  3     2.27

  4     1.40

  5     1.54

  6     1.39

  7     2.14

  8     1.89

  9     1.92

 10     1.76

 11     1.85

 12     1.79

 13     1.37

 14     2.12

 15     2.97

 16     3.13

 17     2.12

 18     2.47

 19     2.37

 20     2.28

 21     2.80

 22     2.88

 23     2.33

 24     2.45

 25     2.71



 26	2.78

 27	3.65

 28	2.72

 29	1.85

 30	1.99

 31	1.84



 32	2.06

 33	2.25

 34	2.12

 35	1.83

 36	2.58

 37	2.65

 38	1.48

 39	2.27

 40	1.79

 41	1.57

 42	1.66

 43	2.34

 44	2.08

 45	2.09

 46	2.43

 47	2.37

 48	1.99

 49	2.18

 50	2.34

 51	2.00

 52	2.36

 53	1.91

 54	2.46

 55	1.36