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Original post by Y11_Maths
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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.
Original post by Y11_Maths
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It is too small to read
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.
Original post by Y11_Maths
It is too small to read
Hopefully you can see it properly now.
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%?
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
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?
Original post by StrangerOnTheNet
One more question with this is lesser=less than or are they trying to trick me because of the wording?
here is is clear that the tables are ≤
https://i.ytimg.com/vi/9KOJtiHAavE/maxresdefault.jpg
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