Median

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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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Median

The median of a set of data is the value of the middle point, when they are arranged in order. For instance:

    # hours worked
    14251953614229
Arranging these data in order gives: 14, 19, 25, 29, 42, 53, 61. We can easily see that the middle value is 29. If there are an even number of points, average the two middle values. Some characteristics of the median are:
  • always exists for a set of data
  • unique
  • not strongly affected by extreme values