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Variables with t and Chi-sq distributions

  1. Jul 15, 2009 #1
    Hi,

    I wish to know if there are any naturally occurring variables that have a t-distribution or chi-distribution.

    I know that test statistics such as the mean or the sum of a sample has a t-distribution, where as the variance of a sample takes the chi-distribution. What I am trying to understand is why these statistics take a particular distribution.

    Thanks,

    MG.
     
  2. jcsd
  3. Aug 6, 2009 #2

    EnumaElish

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