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Math Help - Correlation coefficient.

  1. #1
    Junior Member allsmiles's Avatar
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    Correlation coefficient.

    The four scatterplots show correlations in four sets of data, where the correlation coefficients are r1, r2, r3, and r4. Choose the correct statement.
    A)
    r1 < r2 < r3 < r4
    B)
    r2 < r3 < r4 < r1
    C)
    r3 < r2 < r4 < r1
    D)
    r4 < r2 < r1 < r3


    For this problem i got the answer B by guessing and using what i could and understood about this problem. At first i thought it was A, but then thought that answer was wrong.

    I would like to know if this is the right answer, if not, how would i get the right answer.

    thankyou
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  2. #2
    MHF Contributor
    skeeter's Avatar
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    what is a correlation coefficient, and what does it measure?
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  3. #3
    MHF Contributor undefined's Avatar
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    Quote Originally Posted by allsmiles View Post
    For this problem i got the answer B by guessing and using what i could and understood about this problem. At first i thought it was A, but then thought that answer was wrong.
    This doesn't say anything about your reasoning about the problem.

    If you know what a correlation coefficient is, then you will be able to answer this problem easily. You can just look at the pictures on this page, on the right side and kind of near the top.
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  4. #4
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    Two are positive, one is negative, and one has no correlation. If you can figure out which two are positive, you are almost done.
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