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A Frequency Distribution Example

Table III shows the unsorted raw data that will be used to make a frequency table. Note that the low and high results are highlighted. These data are continuous; however, the testing equipment rounds the data off to the nearest whole number of milligrams.

    Table III
    Concentration of Serum Glucose (mg/dL) in 130 Hospital Employees
    100 83 80 114 100
    80 85 81 101 80
    95 108 79 81 97
    77 84 88 78 86
    81 77 98 85 92
    105 85 108 90 89
    84 94 84 81 82
    78 84 82 98 86
    87 74 79 104 89
    91 85 72 92 90
    93 87 90 99 96
    110 107 97 84 76
    83 80 101 75 84
    76 73 86 71 84
    70 79 91 86 86
    91 87 96 96 97
    106 104 65 81 103
    83 90 70 80 80
    75 82 83 76 81
    87 84 86 93 86
    103 76 112 102 93
    89 67 78 84 82
    91 86 82 82 87
    89 95 90 73 103
    75 113 93 86 77
    95 94 99 87 92