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Statistic vs Parameter

  1. May 15, 2008 #1

    danago

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    Hey. I just wanted to clear something up. My texbook often refers to statistics and parameters. Is a statistic simply a calculation made on a sample, whereas a parameter is a property of the whole property from which the sample was taken?

    Thanks in advance,
    Dan.
     
  2. jcsd
  3. May 16, 2008 #2
    Yeah, basically. A common definition of "statistic" is "a function of a sample/observation." A parameter is a property of the underlying population distribution. For example, the sample mean is a statistic which, as the sample becomes large, approaches the population mean, which is a parameter.
     
  4. May 16, 2008 #3

    danago

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    yep ok that answers my question :smile: thanks
     
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