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The page below is a sample from the LabCE course Descriptive Statistics. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Bar Chart

Bar charts are preferred for discrete data.  The height of the bar between the "65" and "70" tick marks corresponds to the number of elements in the 65 - 70 class,  etc.

    Figure 3
    Frequency of Serum Glucose Levels in 130 Hospital Employees