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  1. #1
    la vache fantôme phantomcow2's Avatar
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    Statistics -- blue estimator?

    Some point estimator, mu hat, is given by the following:
    mu hat = .2X1 + 2.5X2 - X3 - .7X4

    There are 4 samples (Xi). I am asked to determine whether this mu hat is a BLUE estimator of mu.

    I can prove that mu hat is unbiased by taking the expected value of the expression, and I can show that mu hat is not a linear estimator. Since it is not even a linear estimator, I would expect that this is not a BLUE estimator. But I feel like I get in trouble when I make assumptions, so I thought I'd ask if somebody could shed some light here. Thanks.
    Last edited by phantomcow2; 09-05-09 at 10:40 PM.
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  2. #2
    la vache fantôme phantomcow2's Avatar
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    nevermind this. I realize it is a linear estimator after all.
    C://dos
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  3. #3
    Senior Member Ted Danson's Avatar
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    Whats a mu hat?
    Merton Enthusiast

  4. #4
    Mrs. DataJunkie Luddite's Avatar
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    Holy gods, is this what statistics is like? I'm so fragged!

  5. #5
    Free @coasting RUOkie's Avatar
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    Quote Originally Posted by Herbie53 View Post
    Being full of crap and depositing it here consistently is really nothing to be proud of.

  6. #6
    Administrator Allen's Avatar
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    Quote Originally Posted by Ted Danson View Post
    Whats a mu hat?


    Though I recommend Poodle Hat.

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