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Median by interpolation

  1. Jun 8, 2005 #1
    I was doing some last minute skimming through my book for my exam tomorrow and panic. Can someone please please tell me about finding the median by interpolation and perhaps an example of how it would could used or asked, i will be forever greatful :cool:

    yasmin x
    (i can only find a small paragraph in my book which doesnt tell me much :confused: )
     
  2. jcsd
  3. Jun 8, 2005 #2
    is it:

    Q2 = ((n/2 * f)/fc) * c

    b - lower class boundary
    f - sum of all frequencies below b
    fc - frequency of the class width containing quartile required
    c - class width of required class
    n - total frequency
     
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