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Statistics- Degrees of Freedom

  1. Dec 2, 2008 #1
    If I flip two coins at once and don't care which one is heads in the case of a head and a tail, how many degrees of freedom are there?
  2. jcsd
  3. Dec 6, 2008 #2


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    What is the statistic you are considering?
  4. Dec 21, 2008 #3
    Yes, it really depends on the statistical test you are interested in using. If you wish to test whether the probability of getting a head or a tail is equal (i.e., P(H)=P(T)=0.25 for two coins), then you may want to use the Chi-square goodness of fit test.

    The degree of freedom for this test, then, is Number of Characteristics - 1 = 2 - 1 = 1. Notice there are two characteristics here - tail and head.

    Feel free to correct me if you think otherwise.
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