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Math2400

  • one year ago

can someone please help me out this ><

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  1. Math2400
    • one year ago
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  2. amistre64
    • one year ago
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    Coef means: coefficient. the coef for the constant term (the y intercept) is given the coef for the variable term (the slope) is given

  3. amistre64
    • one year ago
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    hmm, it appears that they already GIVE you the regression equation where it says: "The regression equation is"

  4. Math2400
    • one year ago
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    @ganeshie8 if u get a second lmk if u could help me out with this one ><

  5. Math2400
    • one year ago
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    would it be: 0.92 + 2.06x ?

  6. Vocaloid
    • one year ago
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    almost, it says to round to 3 decimal places

  7. Vocaloid
    • one year ago
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    you picked the right numbers, you just need to round differently

  8. Math2400
    • one year ago
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    so like 0.920 + 2.060x ?

  9. Vocaloid
    • one year ago
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    look at the table again

  10. Vocaloid
    • one year ago
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    the constant is 0.919 and the coefficient is 2.0647, which rounds to 2.065

  11. Math2400
    • one year ago
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    ok and then for the next question do i just plug in 25 C to get 52.42 or do I use the graph?

  12. Math2400
    • one year ago
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    *table

  13. Vocaloid
    • one year ago
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    use the function, let x = 25

  14. Math2400
    • one year ago
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    so 52.544 ?

  15. Math2400
    • one year ago
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    thank you so much @Vocaloid you're the only one who has been able to help me on this one lol. it goes on to ask: the percent of the variation in beak heat loss is explained by the straight-line relationship with temperature is ______. Round your answer to one decimal place. so it would it be 83.6% ?

  16. Vocaloid
    • one year ago
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    yup!

  17. Math2400
    • one year ago
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    awesome and then the last one says: Using the information in Figure 4.9, the correlation r between beak heat loss and temperature is ______. Round your answer to 3 decimal places. Is it 4.507??

  18. Vocaloid
    • one year ago
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    nope they give you r^2, just take the square root of that to find r

  19. Math2400
    • one year ago
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    wait which is r^2?

  20. Math2400
    • one year ago
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    @Vocaloid

  21. Vocaloid
    • one year ago
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    R-Sq

  22. Math2400
    • one year ago
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    so change it to 0.824 and square root to get 0.908 ?

  23. Vocaloid
    • one year ago
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    yes

  24. Math2400
    • one year ago
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    Thank you so much :)

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