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anonymous

  • one year ago

x (inches) 20 24 36 41 46 y (pounds) 2 4 12 15 20 -The linear correlation coefficient would be positive Using the data, what is the sample correlation coefficient r ? Round your answer to three decimal places.

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  1. math&ing001
    • one year ago
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    Did you see the equation that let you calculate r from values of x and y ?

  2. anonymous
    • one year ago
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    Do you mean, the formula you have to put in calculator?

  3. math&ing001
    • one year ago
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    Yeah it looks something like this.

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  4. math&ing001
    • one year ago
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    But I think this is too much work, maybe you have something more easy to work with ?

  5. anonymous
    • one year ago
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    I was given some directions on how to enter it into the calculator

  6. math&ing001
    • one year ago
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    You mean you enter the x and y values to the calculator and it automatically calculates r for you ?

  7. anonymous
    • one year ago
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    It creates a scatter plot

  8. math&ing001
    • one year ago
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    I found this tool online that calculates r from x and y values. http://www.socscistatistics.com/tests/pearson/Default2.aspx According to it r=0.996 in our case. I think it's meaningless to just do all that work by yourself, just basic calculations.

  9. anonymous
    • one year ago
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    Wow, that's really useful! Thanks again

  10. math&ing001
    • one year ago
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    No probs !

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