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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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Standard Deviation

In the last section, we saw several methods of determining the approximate "center" of a set of data. Another important characteristic of a set of data is how closely those data group around the center. Take a look at the following graphs:


    Figure 8
    Frequency Distribution of Test Scores



    Figure 9
    Frequency Distribution of Test Scores



    Figure 10
    Frequency Distribution of Test Scores