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Math Help - Coefficient of correlaton

  1. #1
    chancer
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    Coefficient of correlaton

    May I ask the help of the math elite please.

    Thank you in advance squared.

    Following observations selected at random.

    X: 5 3 6 3 4 4 6 8
    Y: 13 15 7 12 13 11 9 5

    Determine the coefficent of correlation and the coeffcient of determination. Interpret the association between X and Y.
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  2. #2
    Forum Admin topsquark's Avatar
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    I agree with your correlation coefficient. I'm afraid I don't know what the coefficient of determination is.

    -Dan
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  3. #3
    chancer
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    Thanks.

    I am never going to take another math class again. 20 years after I first decided I hated it, my viewpoint hasn't chaged.

    If I wanted an "infraction" I would go back to the 4th grade.

    I'm out.
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  4. #4
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by chancer View Post
    Thanks.

    I am never going to take another math class again. 20 years after I first decided I hated it, my viewpoint hasn't chaged.

    If I wanted an "infraction" I would go back to the 4th grade.

    I'm out.
    (shrugs) 'Dem's 'da rules.

    -Dan
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  5. #5
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    Here,

    Note the correlation coefficient square is,
    r^2=.7935
    Thus,
    r=\sqrt{.7935}
    Attached Thumbnails Attached Thumbnails Coefficient of correlaton-picture1.gif  
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  6. #6
    Forum Admin topsquark's Avatar
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    Ah! The coefficient of determination is just r^2, so TPH gave that to you.

    -Dan
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