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Math Help - Frequency Distribution

  1. #1
    Newbie
    Joined
    Sep 2013
    From
    tehran
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    4

    Question Frequency Distribution

    Hi all . I have a question, that is very important for me!
    It is written in book "basic statistics for business and economics" for organizing data into a frequency distribution:
    step 1: Decide on the number of classes. The goal is to use just enough groupings or classes to reveal the shape of the distribution. Some judgment is needed here. A useful recipe to determine the number of classes (k) is the "2 to the k rule". This guide suggests you select the smallest number (k) for the number of classes such that 2k (in words, 2 raised to the power of k) is greater than the number of observations (n). [n<=2k]

    I want to know, how can I prove this formula?
    Please Help!
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  2. #2
    MHF Contributor

    Joined
    Apr 2005
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    Re: Frequency Distribution

    You can't "prove it". It is not "theorem". It is, as it says, a "useful recipe". It is a "guide" that "suggests" you do a particular thing.
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