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Given a sample of points how could I determine what distribution does

  1. Aug 28, 2008 #1
    Given a sample of points how could I determine what distribution does it belong to ?

    Any help please for newbie?
     
  2. jcsd
  3. Aug 28, 2008 #2
    Re: Sample

    First step is for you to decide if it's a discrete or cont. ones. Then you want to look into "fitting a probability distribution". There's various ways to do that, one of them is to compute few statistics and see if you notice anything i.e. Mean = Variance, etc.
     
  4. Aug 29, 2008 #3

    statdad

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    Homework Helper

    Re: Sample

    It is more a process of ruling out the distributions your sample is not from. Start by graphing the data - boxplot, as a guide for outliers, skewness or symmetry, histogram (for a large enough sample), probability plots, etc.
    Be aware that it can take very large sample sizes to determine whether (as an example) your data is better described by a normal distribution, a t-distribution, or some other symmetric distribution.
    with what source of data are you working?
     
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