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Math Help - significance with large n

  1. #1
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    Question significance with large n

    Hi,

    I'm trying to figure out whether two groups are significantly different.

    I've taken every gene in the human genome and divided them into 2 groups.

    GroupA contains 4000 genes
    GroupB contains 16000 genes

    Each gene has been analysed for the density of a certain marker.

    So I have 20,000 densities and I need to know if GroupA is different from GroupB.

    Any thoughts?

    Thanks
    Last edited by CaptainBlack; May 20th 2010 at 12:30 AM.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by Welshche View Post
    Hi,

    I'm trying to figure out whether two groups are significantly different.

    I've taken every gene in the human genome and divided them into 2 groups.

    GroupA contains 4000 genes
    GroupB contains 16000 genes

    Each gene has been analysed for the density of a certain marker.

    So I have 20,000 densities and I need to know if GroupA is different from GroupB.

    Any thoughts?

    Thanks

    More information needed, like what kind of thing is "the density of a certain marker"? A number maybe?

    CB
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