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Math Help - notation question

  1. #1
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    notation question

    what does the notation

    f(theta: Y_1, Y_2.....Y_n) mean?

    I believe in this example theta is a parameter of the population sample Y_i.

    Does it mean that theta (the parameter itself, say variance or mu) is a function of the population sample? Thanks
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  2. #2
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    Re: notation question

    No. "theta is a function of the population sample" would be " u= f(Y_1, Y_2, ..., Y_n)".

    This appears to say "we have a function, f, of theta, for given values of Y_1, Y_2, Y_2".
    That is, different samples may give different functions of theta, not different theta.
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