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    I don't get it. Check image down below
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    Upload a picture?
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    (Original post by Y11_Maths)
    Upload a picture?
    Just did.
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    (Original post by StrangerOnTheNet)
    ...
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    (Original post by RDKGames)
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    There should be a new post with the pic.
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    (Original post by Y11_Maths)
    Upload a picture?
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    It is too small to read
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    (Original post by Y11_Maths)
    It is too small to read
    ​A researcher has collected data on the prevalence of a type of cancer and its link to concentrations of radon gas in the area. They calculate​ Pearson's Product Moment Correlation Coefficient to be 0.21.

    ​b) What percentage of the variation in the prevalence of this cancer could be attributed to the variation in radon gas​ concentration? Write your answer correct to zero decimal places e.g. 16​ %, 85​ %, 3 ​%. Do not write the percentage sign.
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    (Original post by Y11_Maths)
    It is too small to read
    Hopefully you can see it properly now.
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    you need to find r2... this is called the coefficient of determination and represents the % of variation attributable to the radion gas.
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    (Original post by the bear)
    you need to find r2... this is called the coefficient of determination and represents the % of variation attributable to the radion gas.
    But all they gave me was the co-effiecient which is 0.21 so do l square it making it 4%?
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    (Original post by StrangerOnTheNet)
    But all they gave me was the co-effiecient which is 0.21 so do l square it making it 4%?
    yes
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    (Original post by the bear)
    yes
    One more question with this is lesser=less than or are they trying to trick me because of the wording?
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    (Original post by StrangerOnTheNet)
    One more question with this is lesser=less than or are they trying to trick me because of the wording?
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    here is is clear that the tables are


    https://i.ytimg.com/vi/9KOJtiHAavE/maxresdefault.jpg
 
 
 
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