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    dottie76's Avatar
    dottie76 Posts: 1, Reputation: 1
    New Member
     
    #1

    May 17, 2008, 10:57 AM
    Constructing a frequency distribution table
    Construct a grouped frequency distribution for the following 28 scores using a class width of 5.
    23 20 18 22 12 14 21 23 16 21 22
    21 16 18 27 30 17 24 21 27 19 29
    25 23 28 24 19 18


    OK here is where I am...
    highest value 30
    lowest value = 12
    range of set 30-12= 18

    but where do go from here?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    May 17, 2008, 11:39 AM
    The range is 30-12=18.

    18/4=4.5

    Which we round up to 5, which is the width.

    Code:
    12-16        4
    17-21       11
    22-26       8
    27-31        5

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